diff --git a/README.md b/README.md
index 7226f0d..9c3fa04 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # BokkyPooBah's DateTime Library
 
-**Status: Work in progress**
+**Status: I'm currently trying to get this library audited, so don't use in production mode yet. Feedback welcome.**
 
 A gas-efficient Solidity date and time library.
 
@@ -46,9 +46,12 @@ Instead of using loops and lookup tables, this date conversions library uses for
   * [subHours](#subhours)
   * [subMinutes](#subminutes)
   * [subSeconds](#subseconds)
-  * [diffDays](#diffdays)
-  * [diffMonths](#diffmonths)
   * [diffYears](#diffyears)
+  * [diffMonths](#diffmonths)
+  * [diffDays](#diffdays)
+  * [diffHours](#diffhours)
+  * [diffMinutes](#diffminutes)
+  * [diffSeconds](#diffseconds)
 * [Gas Cost](#gas-cost)
 * [Algorithm](#algorithm)
 * [Testing](#testing)
@@ -60,8 +63,8 @@ Instead of using loops and lookup tables, this date conversions library uses for
 ## History
 
 Version  | Date         | Notes
-:------- |:------------ |:-----------------------------
-v1.00    | May 25 2018  | First release (currently WIP)
+:------- |:------------ |:---------------------------------------
+v1.00    | May 25 2018  | First release (currently being audited)
 
 <br />
 
@@ -95,7 +98,7 @@ All functions operate on the `uint` timestamp data type, except for functions pr
 
 ### _daysFromDate
 
-Calculate the number of days `_days` from 1970/01/01 to `year`/`month`/`day`
+Calculate the number of days `_days` from 1970/01/01 to `year`/`month`/`day`.
 
 ```javascript
 function _daysFromDate(uint year, uint month, uint day) public pure returns (uint _days)
@@ -105,7 +108,7 @@ function _daysFromDate(uint year, uint month, uint day) public pure returns (uin
 
 ### _daysToDate
 
-Calculate `year`/`month`/`day` from the number of days `_days` since 1970/01/01
+Calculate `year`/`month`/`day` from the number of days `_days` since 1970/01/01 .
 
 ```javascript
 function _daysToDate(uint _days) public pure returns (uint year, uint month, uint day)
@@ -115,7 +118,7 @@ function _daysToDate(uint _days) public pure returns (uint year, uint month, uin
 
 ### timestampFromDate
 
-Calculate the `timestamp` to `year`/`month`/`day`
+Calculate the `timestamp` to `year`/`month`/`day`.
 
 ```javascript
 function timestampFromDate(uint year, uint month, uint day) public pure returns (uint timestamp)
@@ -125,7 +128,7 @@ function timestampFromDate(uint year, uint month, uint day) public pure returns
 
 ### timestampFromDateTime
 
-Calculate the `timestamp` to `year`/`month`/`day` `hour`:`minute`:`second` UTC
+Calculate the `timestamp` to `year`/`month`/`day` `hour`:`minute`:`second` UTC.
 
 ```javascript
 function timestampFromDateTime(uint year, uint month, uint day, uint hour, uint minute, uint second) public pure returns (uint timestamp)
@@ -135,7 +138,7 @@ function timestampFromDateTime(uint year, uint month, uint day, uint hour, uint
 
 ### timestampToDate
 
-Calculate `year`/`month`/`day` from `timestamp`
+Calculate `year`/`month`/`day` from `timestamp`.
 
 ```javascript
 function timestampToDate(uint timestamp) public pure returns (uint year, uint month, uint day)
@@ -145,7 +148,7 @@ function timestampToDate(uint timestamp) public pure returns (uint year, uint mo
 
 ### timestampToDateTime
 
-Calculate `year`/`month`/`day` `hour`:`minute`:`second` from `timestamp`
+Calculate `year`/`month`/`day` `hour`:`minute`:`second` from `timestamp`.
 
 ```javascript
 function timestampToDateTime(uint timestamp) public pure returns (uint year, uint month, uint day, uint hour, uint minute, uint second)
@@ -195,7 +198,7 @@ function isWeekEnd(uint timestamp) public pure returns (bool weekEnd)
 
 ### getDaysInMonth
 
-Return the day in the month `daysInMonth` for the month specified by `timestamp`
+Return the day in the month `daysInMonth` for the month specified by `timestamp`.
 
 ```javascript
 function getDaysInMonth(uint timestamp) public pure returns (uint daysInMonth)
@@ -205,7 +208,7 @@ function getDaysInMonth(uint timestamp) public pure returns (uint daysInMonth)
 
 ### _getDaysInMonth
 
-Return the day in the month `daysInMonth` (1, ..., 31) for the month specified by the `year`/`month`
+Return the day in the month `daysInMonth` (1, ..., 31) for the month specified by the `year`/`month`.
 
 ```javascript
 function _getDaysInMonth(uint year, uint month) public pure returns (uint daysInMonth)
@@ -215,7 +218,7 @@ function _getDaysInMonth(uint year, uint month) public pure returns (uint daysIn
 
 ### getDayOfWeek
 
-Return the day of the week `dayOfWeek` (1 = Monday, ..., 7 = Sunday) for the date specified by `timestamp`
+Return the day of the week `dayOfWeek` (1 = Monday, ..., 7 = Sunday) for the date specified by `timestamp`.
 
 ```javascript
 function getDayOfWeek(uint timestamp) public pure returns (uint dayOfWeek)
@@ -225,7 +228,7 @@ function getDayOfWeek(uint timestamp) public pure returns (uint dayOfWeek)
 
 ### getYear
 
-Get the `year` of the date specified by `timestamp`
+Get the `year` of the date specified by `timestamp`.
 
 ```javascript
 function getYear(uint timestamp) public pure returns (uint year)
@@ -235,7 +238,7 @@ function getYear(uint timestamp) public pure returns (uint year)
 
 ### getMonth
 
-Get the `month` of the date specified by `timestamp`
+Get the `month` of the date specified by `timestamp`.
 
 ```javascript
 function getMonth(uint timestamp) public pure returns (uint month)
@@ -245,7 +248,7 @@ function getMonth(uint timestamp) public pure returns (uint month)
 
 ### getDay
 
-Get the day of the month `day` (1, ..., 31) of the date specified `timestamp`
+Get the day of the month `day` (1, ..., 31) of the date specified `timestamp`.
 
 ```javascript
 function getDay(uint timestamp) public pure returns (uint day)
@@ -255,7 +258,7 @@ function getDay(uint timestamp) public pure returns (uint day)
 
 ### getHour
 
-Get the `hour` of the date and time specified by `timestamp`
+Get the `hour` of the date and time specified by `timestamp`.
 
 ```javascript
 function getHour(uint timestamp) public pure returns (uint hour)
@@ -265,7 +268,7 @@ function getHour(uint timestamp) public pure returns (uint hour)
 
 ### getMinute
 
-Get the `minute` of the date and time specified by `timestamp`
+Get the `minute` of the date and time specified by `timestamp`.
 
 ```javascript
 function getMinute(uint timestamp) public pure returns (uint minute)
@@ -275,7 +278,7 @@ function getMinute(uint timestamp) public pure returns (uint minute)
 
 ### getSecond
 
-Get the `second` of the date and time specified by `timestamp`
+Get the `second` of the date and time specified by `timestamp`.
 
 ```javascript
 function getSecond(uint timestamp) public pure returns (uint second)
@@ -285,6 +288,10 @@ function getSecond(uint timestamp) public pure returns (uint second)
 
 ### addYears
 
+Add `_years` years to the date and time specified by `timestamp`.
+
+Note that the resulting day of the month will be adjusted if it exceeds the valid number of days in the month. For example, if the original date is 2020/02/29 and an additional year is added to this date, the resulting date will be an invalid date of 2021/02/29. The resulting date is then adjusted to 2021/02/28.
+
 ```javascript
 function addYears(uint timestamp, uint _years) public pure returns (uint newTimestamp)
 ```
@@ -293,6 +300,10 @@ function addYears(uint timestamp, uint _years) public pure returns (uint newTime
 
 ### addMonths
 
+Add `_months` months to the date and time specified by `timestamp`.
+
+Note that the resulting day of the month will be adjusted if it exceeds the valid number of days in the month. For example, if the original date is 2019/01/31 and an additional month is added to this date, the resulting date will be an invalid date of 2019/02/31. The resulting date is then adjusted to 2019/02/28.
+
 ```javascript
 function addMonths(uint timestamp, uint _months) public pure returns (uint newTimestamp)
 ```
@@ -301,6 +312,8 @@ function addMonths(uint timestamp, uint _months) public pure returns (uint newTi
 
 ### addDays
 
+Add `_days` days to the date and time specified by `timestamp`.
+
 ```javascript
 function addDays(uint timestamp, uint _days) public pure returns (uint newTimestamp)
 ```
@@ -309,6 +322,8 @@ function addDays(uint timestamp, uint _days) public pure returns (uint newTimest
 
 ### addHours
 
+Add `_hours` hours to the date and time specified by `timestamp`.
+
 ```javascript
 function addHours(uint timestamp, uint _hours) public pure returns (uint newTimestamp)
 ```
@@ -317,6 +332,8 @@ function addHours(uint timestamp, uint _hours) public pure returns (uint newTime
 
 ### addMinutes
 
+Add `_minutes` minutes to the date and time specified by `timestamp`.
+
 ```javascript
 function addMinutes(uint timestamp, uint _minutes) public pure returns (uint newTimestamp)
 ```
@@ -325,6 +342,8 @@ function addMinutes(uint timestamp, uint _minutes) public pure returns (uint new
 
 ### addSeconds
 
+Add `_seconds` seconds to the date and time specified by `timestamp`.
+
 ```javascript
 function addSeconds(uint timestamp, uint _seconds) public pure returns (uint newTimestamp)
 ```
@@ -333,6 +352,10 @@ function addSeconds(uint timestamp, uint _seconds) public pure returns (uint new
 
 ### subYears
 
+Subtract `_years` years from the date and time specified by `timestamp`.
+
+Note that the resulting day of the month will be adjusted if it exceeds the valid number of days in the month. For example, if the original date is 2020/02/29 and a year is subtracted from this date, the resulting date will be an invalid date of 2019/02/29. The resulting date is then adjusted to 2019/02/28.
+
 ```javascript
 function subYears(uint timestamp, uint _years) public pure returns (uint newTimestamp)
 ```
@@ -341,6 +364,10 @@ function subYears(uint timestamp, uint _years) public pure returns (uint newTime
 
 ### subMonths
 
+Subtract `_months` months from the date and time specified by `timestamp`.
+
+Note that the resulting day of the month will be adjusted if it exceeds the valid number of days in the month. For example, if the original date is 2019/03/31 and a month is subtracted from this date, the resulting date will be an invalid date of 2019/02/31. The resulting date is then adjusted to 2019/02/28.
+
 ```javascript
 function subMonths(uint timestamp, uint _months) public pure returns (uint newTimestamp)
 ```
@@ -349,6 +376,8 @@ function subMonths(uint timestamp, uint _months) public pure returns (uint newTi
 
 ### subDays
 
+Subtract `_days` days from the date and time specified by `timestamp`.
+
 ```javascript
 function subDays(uint timestamp, uint _days) public pure returns (uint newTimestamp)
 ```
@@ -357,6 +386,8 @@ function subDays(uint timestamp, uint _days) public pure returns (uint newTimest
 
 ### subHours
 
+Subtract `_hours` hours from the date and time specified by `timestamp`.
+
 ```javascript
 function subHours(uint timestamp, uint _hours) public pure returns (uint newTimestamp)
 ```
@@ -365,6 +396,8 @@ function subHours(uint timestamp, uint _hours) public pure returns (uint newTime
 
 ### subMinutes
 
+Subtract `_minutes` minutes from the date and time specified by `timestamp`.
+
 ```javascript
 function subMinutes(uint timestamp, uint _minutes) public pure returns (uint newTimestamp)
 ```
@@ -373,32 +406,82 @@ function subMinutes(uint timestamp, uint _minutes) public pure returns (uint new
 
 ### subSeconds
 
+Subtract `_seconds` seconds from the date and time specified by `timestamp`.
+
 ```javascript
 function subSeconds(uint timestamp, uint _seconds) public pure returns (uint newTimestamp)
 ```
 
 <br />
 
-### diffDays
+### diffYears
+
+Calculate the number of years between the dates specified by `fromTimeStamp` and `toTimestamp`.
+
+Note that this calculation is computed as `getYear(toTimestamp) - getYear(fromTimestamp)`, rather that subtracting the years (since 1970/01/01) represented by both `{to|from}Timestamp`.
 
 ```javascript
-function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days)
+function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years)
 ```
 
 <br />
 
 ### diffMonths
 
+Calculate the number of months between the dates specified by `fromTimeStamp` and `toTimestamp`.
+
+Note that this calculation is computed as `getYear(toTimestamp) * 12 + getMonth(toTimestamp) - getYear(fromTimestamp) * 12 - getMonth(fromTimestamp)`, rather that subtracting the months (since 1970/01/01) represented by both `{to|from}Timestamp`.
+
 ```javascript
 function diffMonths(uint fromTimestamp, uint toTimestamp) public pure returns (uint _months)
 ```
 
 <br />
 
-### diffYears
+### diffDays
+
+Calculate the number of days between the dates specified by `fromTimeStamp` and `toTimestamp`.
+
+Note that this calculation is computed as `(toTimestamp - fromTimestamp) / SECONDS_PER_DAY`, rather that subtracting the days (since 1970/01/01) represented by both `{to|from}Timestamp`.
 
 ```javascript
-function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years)
+function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days)
+```
+
+<br />
+
+### diffHours
+
+Calculate the number of hours between the dates specified by `fromTimeStamp` and `toTimestamp`.
+
+Note that this calculation is computed as `(toTimestamp - fromTimestamp) / SECONDS_PER_HOUR`, rather that subtracting the hours (since 1970/01/01) represented by both `{to|from}Timestamp`.
+
+```javascript
+function diffHours(uint fromTimestamp, uint toTimestamp) public pure returns (uint _hours)
+```
+
+<br />
+
+### diffMinutes
+
+Calculate the number of minutes between the dates specified by `fromTimeStamp` and `toTimestamp`.
+
+Note that this calculation is computed as `(toTimestamp - fromTimestamp) / SECONDS_PER_MINUTE`, rather that subtracting the minutes (since 1970/01/01) represented by both `{to|from}Timestamp`.
+
+```javascript
+function diffMinutes(uint fromTimestamp, uint toTimestamp) public pure returns (uint _minutes)
+```
+
+<br />
+
+### diffSeconds
+
+Calculate the number of seconds between the dates specified by `fromTimeStamp` and `toTimestamp`.
+
+Note that this calculation is computed as `toTimestamp - fromTimestamp`.
+
+```javascript
+function diffSeconds(uint fromTimestamp, uint toTimestamp) public pure returns (uint _seconds)
 ```
 
 <br />
@@ -418,7 +501,7 @@ From executing the following function, the transaction gas cost is 24,693
 24693
 ```
 
-From Remix, the execution gas cost is 3,101.
+From Remix, the execution gas cost is 3,101 .
 
 <br />
 
@@ -433,7 +516,7 @@ From executing the following function, the transaction gas cost is 25,054
 25054
 ```
 
-From Remix, the execution gas cost is 2,566
+From Remix, the execution gas cost is 2,566 .
 
 <br />
 
@@ -554,7 +637,7 @@ in [test/test1results.txt](test/test1results.txt) and the detailed output saved
 * [x] Test `get{Year|Month|Day|Hour|Minute|Second}(...)`
 * [x] Test `add{Years|Months|Days|Hours|Minutes|Seconds}(...)`
 * [x] Test `sub{Years|Months|Days|Hours|Minutes|Seconds}(...)`
-* [x] Test `diff{Days|Months|Years}(...)`
+* [x] Test `diff{Years|Months|Days|Hours|Minutes|Seconds}(...)`
 * [x] For a range of Unix timestamps from 1970/01/01 to 2345/12/21
   * [x] Generate the year/month/day hour/minute/second from the Unix timestamp using `timestampToDateTime(...)`
   * [x] Generate the Unix timestamp from the calculated year/month/day hour/minute/second using `timestampFromDateTime(...)`
@@ -564,4 +647,4 @@ in [test/test1results.txt](test/test1results.txt) and the detailed output saved
 
 <br />
 
-(c) BokkyPooBah / Bok Consulting Pty Ltd - May 23 2018. [GNU Lesser General Public License 3.0](https://www.gnu.org/licenses/lgpl-3.0.en.html)
\ No newline at end of file
+(c) BokkyPooBah / Bok Consulting Pty Ltd - May 26 2018. [GNU Lesser General Public License 3.0](https://www.gnu.org/licenses/lgpl-3.0.en.html)
\ No newline at end of file
diff --git a/contracts/BokkyPooBahsDateTimeLibrary.sol b/contracts/BokkyPooBahsDateTimeLibrary.sol
index 0d3719f..55a29cf 100644
--- a/contracts/BokkyPooBahsDateTimeLibrary.sol
+++ b/contracts/BokkyPooBahsDateTimeLibrary.sol
@@ -30,9 +30,9 @@ pragma solidity ^0.4.23;
 
 library BokkyPooBahsDateTimeLibrary {
 
-    uint constant SECONDS_PER_MINUTE = 60;
-    uint constant SECONDS_PER_HOUR = 60 * 60;
     uint constant SECONDS_PER_DAY = 24 * 60 * 60;
+    uint constant SECONDS_PER_HOUR = 60 * 60;
+    uint constant SECONDS_PER_MINUTE = 60;
     int constant OFFSET19700101 = 2440588;
 
     uint constant DOW_MON = 1;
@@ -280,11 +280,7 @@ library BokkyPooBahsDateTimeLibrary {
         require(newTimestamp <= timestamp);
     }
 
-    function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days) {
-        require(fromTimestamp <= toTimestamp);
-        _days = (toTimestamp - fromTimestamp) / SECONDS_PER_DAY;
-    }
-    function diffMonths(uint fromTimestamp, uint toTimestamp) public pure returns (uint _months) {
+    function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years) {
         require(fromTimestamp <= toTimestamp);
         uint fromYear;
         uint fromMonth;
@@ -294,9 +290,9 @@ library BokkyPooBahsDateTimeLibrary {
         uint toDay;
         (fromYear, fromMonth, fromDay) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
         (toYear, toMonth, toDay) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
-        _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;
+        _years = toYear - fromYear;
     }
-    function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years) {
+    function diffMonths(uint fromTimestamp, uint toTimestamp) public pure returns (uint _months) {
         require(fromTimestamp <= toTimestamp);
         uint fromYear;
         uint fromMonth;
@@ -306,6 +302,22 @@ library BokkyPooBahsDateTimeLibrary {
         uint toDay;
         (fromYear, fromMonth, fromDay) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
         (toYear, toMonth, toDay) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
-        _years = toYear - fromYear;
+        _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;
+    }
+    function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days) {
+        require(fromTimestamp <= toTimestamp);
+        _days = (toTimestamp - fromTimestamp) / SECONDS_PER_DAY;
+    }
+    function diffHours(uint fromTimestamp, uint toTimestamp) public pure returns (uint _hours) {
+        require(fromTimestamp <= toTimestamp);
+        _hours = (toTimestamp - fromTimestamp) / SECONDS_PER_HOUR;
+    }
+    function diffMinutes(uint fromTimestamp, uint toTimestamp) public pure returns (uint _minutes) {
+        require(fromTimestamp <= toTimestamp);
+        _minutes = (toTimestamp - fromTimestamp) / SECONDS_PER_MINUTE;
+    }
+    function diffSeconds(uint fromTimestamp, uint toTimestamp) public pure returns (uint _seconds) {
+        require(fromTimestamp <= toTimestamp);
+        _seconds = toTimestamp - fromTimestamp;
     }
 }
\ No newline at end of file
diff --git a/contracts/TestDateTime.sol b/contracts/TestDateTime.sol
index feb5b81..765bdaa 100644
--- a/contracts/TestDateTime.sol
+++ b/contracts/TestDateTime.sol
@@ -116,13 +116,22 @@ contract TestDateTime {
         newTimestamp = BokkyPooBahsDateTimeLibrary.subSeconds(timestamp, _seconds);
     }
 
-    function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days) {
-        _days = BokkyPooBahsDateTimeLibrary.diffDays(fromTimestamp, toTimestamp);
+    function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years) {
+        _years = BokkyPooBahsDateTimeLibrary.diffYears(fromTimestamp, toTimestamp);
     }
     function diffMonths(uint fromTimestamp, uint toTimestamp) public pure returns (uint _months) {
         _months = BokkyPooBahsDateTimeLibrary.diffMonths(fromTimestamp, toTimestamp);
     }
-    function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years) {
-        _years = BokkyPooBahsDateTimeLibrary.diffYears(fromTimestamp, toTimestamp);
+    function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days) {
+        _days = BokkyPooBahsDateTimeLibrary.diffDays(fromTimestamp, toTimestamp);
+    }
+    function diffHours(uint fromTimestamp, uint toTimestamp) public pure returns (uint _hours) {
+        _hours = BokkyPooBahsDateTimeLibrary.diffHours(fromTimestamp, toTimestamp);
+    }
+    function diffMinutes(uint fromTimestamp, uint toTimestamp) public pure returns (uint _minutes) {
+        _minutes = BokkyPooBahsDateTimeLibrary.diffMinutes(fromTimestamp, toTimestamp);
+    }
+    function diffSeconds(uint fromTimestamp, uint toTimestamp) public pure returns (uint _seconds) {
+        _seconds = BokkyPooBahsDateTimeLibrary.diffSeconds(fromTimestamp, toTimestamp);
     }
 }
\ No newline at end of file
diff --git a/test/01_test1.sh b/test/01_test1.sh
index bf25d53..d05e501 100755
--- a/test/01_test1.sh
+++ b/test/01_test1.sh
@@ -478,17 +478,28 @@ if ("$MODE" == "full") {
 }
 
 if ("$MODE" == "full") {
-  console.log("RESULT: ---------- Test diff{Days|Months|Years} ----------");
+  console.log("RESULT: ---------- Test diff{Years|Months|Days|Hours|Minutes|Seconds} ----------");
   fromTimestamp = testDateTime.timestampFromDateTime(2017, 10, 21, 1, 2, 3);
+  console.log("RESULT: fromTimestamp=" + fromTimestamp + " " + testDateTime.timestampToDateTime(fromTimestamp));
   toTimestamp = testDateTime.timestampFromDateTime(2019, 7, 18, 4, 5, 6);
+  console.log("RESULT: toTimestamp=" + toTimestamp + " " + testDateTime.timestampToDateTime(toTimestamp));
 
-  if (!assert(testDateTime.diffDays(fromTimestamp, toTimestamp) == 635, testDateTime.timestampToDateTime(fromTimestamp) + " to " + testDateTime.timestampToDateTime(fromTimestamp) + " has 635 days diff")) {
+  if (!assert(testDateTime.diffYears(fromTimestamp, toTimestamp) == 2, testDateTime.timestampToDateTime(fromTimestamp) + " to " + testDateTime.timestampToDateTime(toTimestamp) + " has 2 years diff")) {
     failureDetected = true;
   }
-  if (!assert(testDateTime.diffMonths(fromTimestamp, toTimestamp) == 21, testDateTime.timestampToDateTime(fromTimestamp) + " to " + testDateTime.timestampToDateTime(fromTimestamp) + " has 21 months diff")) {
+  if (!assert(testDateTime.diffMonths(fromTimestamp, toTimestamp) == 21, testDateTime.timestampToDateTime(fromTimestamp) + " to " + testDateTime.timestampToDateTime(toTimestamp) + " has 21 months diff")) {
     failureDetected = true;
   }
-  if (!assert(testDateTime.diffYears(fromTimestamp, toTimestamp) == 2, testDateTime.timestampToDateTime(fromTimestamp) + " to " + testDateTime.timestampToDateTime(fromTimestamp) + " has 2 years diff")) {
+  if (!assert(testDateTime.diffDays(fromTimestamp, toTimestamp) == 635, testDateTime.timestampToDateTime(fromTimestamp) + " to " + testDateTime.timestampToDateTime(toTimestamp) + " has 635 days diff")) {
+    failureDetected = true;
+  }
+  if (!assert(testDateTime.diffHours(fromTimestamp, toTimestamp) == 15243, testDateTime.timestampToDateTime(fromTimestamp) + " to " + testDateTime.timestampToDateTime(toTimestamp) + " has 15,243 hours diff")) {
+    failureDetected = true;
+  }
+  if (!assert(testDateTime.diffMinutes(fromTimestamp, toTimestamp) == 914583, testDateTime.timestampToDateTime(fromTimestamp) + " to " + testDateTime.timestampToDateTime(toTimestamp) + " has 914,583 minutes diff")) {
+    failureDetected = true;
+  }
+  if (!assert(testDateTime.diffSeconds(fromTimestamp, toTimestamp) == 54874983, testDateTime.timestampToDateTime(fromTimestamp) + " to " + testDateTime.timestampToDateTime(toTimestamp) + " has 54,874,983 seconds diff")) {
     failureDetected = true;
   }
   console.log("RESULT: ");
diff --git a/test/BokkyPooBahsDateTimeLibrary.js b/test/BokkyPooBahsDateTimeLibrary.js
index 55e71ae..4320cf2 100644
--- a/test/BokkyPooBahsDateTimeLibrary.js
+++ b/test/BokkyPooBahsDateTimeLibrary.js
@@ -3,8 +3,8 @@ var dateTimeLibOutput={
   {
     "BokkyPooBahsDateTimeLibrary.sol:BokkyPooBahsDateTimeLibrary" : 
     {
-      "abi" : 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+      "abi" : "[{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_hours\",\"type\":\"uint256\"}],\"name\":\"subHours\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffMinutes\",\"outputs\":[{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getDaysInMonth\",\"outputs\":[{\"name\":\"daysInMonth\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"name\":\"_daysFromDate\",\"outputs\":[{\"name\":\"_days\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"name\":\"timestampFromDate\",\"outputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getDayOfWeek\",\"outputs\":[{\"name\":\"dayOfWeek\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffHours\",\"outputs\":[{\"name\":\"_hours\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getHour\",\"outputs\":[{\"name\":\"hour\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"}],\"name\":\"_getDaysInMonth\",\"outputs\":[{\"name\":\"daysInMonth\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_months\",\"type\":\"uint256\"}],\"name\":\"addMonths\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isWeekEnd\",\"outputs\":[{\"name\":\"weekEnd\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_years\",\"type\":\"uint256\"}],\"name\":\"addYears\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_years\",\"type\":\"uint256\"}],\"name\":\"subYears\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_hours\",\"type\":\"uint256\"}],\"name\":\"addHours\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"},{\"name\":\"hour\",\"type\":\"uint256\"},{\"name\":\"minute\",\"type\":\"uint256\"},{\"name\":\"second\",\"type\":\"uint256\"}],\"name\":\"timestampFromDateTime\",\"outputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffSeconds\",\"outputs\":[{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getDay\",\"outputs\":[{\"name\":\"day\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_days\",\"type\":\"uint256\"}],\"name\":\"addDays\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffMonths\",\"outputs\":[{\"name\":\"_months\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"name\":\"addMinutes\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getSecond\",\"outputs\":[{\"name\":\"second\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"name\":\"addSeconds\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_days\",\"type\":\"uint256\"}],\"name\":\"_daysToDate\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getYear\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"name\":\"subMinutes\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getMonth\",\"outputs\":[{\"name\":\"month\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_months\",\"type\":\"uint256\"}],\"name\":\"subMonths\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"}],\"name\":\"_isLeapYear\",\"outputs\":[{\"name\":\"leapYear\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isLeapYear\",\"outputs\":[{\"name\":\"leapYear\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_days\",\"type\":\"uint256\"}],\"name\":\"subDays\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffDays\",\"outputs\":[{\"name\":\"_days\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isWeekDay\",\"outputs\":[{\"name\":\"weekDay\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"timestampToDate\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"timestampToDateTime\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"},{\"name\":\"hour\",\"type\":\"uint256\"},{\"name\":\"minute\",\"type\":\"uint256\"},{\"name\":\"second\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"name\":\"subSeconds\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getMinute\",\"outputs\":[{\"name\":\"minute\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffYears\",\"outputs\":[{\"name\":\"_years\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"}]",
+      "bin" : "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"
     }
   },
   "version" : "0.4.24+commit.e67f0147.Darwin.appleclang"
diff --git a/test/BokkyPooBahsDateTimeLibrary.sol b/test/BokkyPooBahsDateTimeLibrary.sol
index 0d3719f..55a29cf 100644
--- a/test/BokkyPooBahsDateTimeLibrary.sol
+++ b/test/BokkyPooBahsDateTimeLibrary.sol
@@ -30,9 +30,9 @@ pragma solidity ^0.4.23;
 
 library BokkyPooBahsDateTimeLibrary {
 
-    uint constant SECONDS_PER_MINUTE = 60;
-    uint constant SECONDS_PER_HOUR = 60 * 60;
     uint constant SECONDS_PER_DAY = 24 * 60 * 60;
+    uint constant SECONDS_PER_HOUR = 60 * 60;
+    uint constant SECONDS_PER_MINUTE = 60;
     int constant OFFSET19700101 = 2440588;
 
     uint constant DOW_MON = 1;
@@ -280,11 +280,7 @@ library BokkyPooBahsDateTimeLibrary {
         require(newTimestamp <= timestamp);
     }
 
-    function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days) {
-        require(fromTimestamp <= toTimestamp);
-        _days = (toTimestamp - fromTimestamp) / SECONDS_PER_DAY;
-    }
-    function diffMonths(uint fromTimestamp, uint toTimestamp) public pure returns (uint _months) {
+    function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years) {
         require(fromTimestamp <= toTimestamp);
         uint fromYear;
         uint fromMonth;
@@ -294,9 +290,9 @@ library BokkyPooBahsDateTimeLibrary {
         uint toDay;
         (fromYear, fromMonth, fromDay) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
         (toYear, toMonth, toDay) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
-        _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;
+        _years = toYear - fromYear;
     }
-    function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years) {
+    function diffMonths(uint fromTimestamp, uint toTimestamp) public pure returns (uint _months) {
         require(fromTimestamp <= toTimestamp);
         uint fromYear;
         uint fromMonth;
@@ -306,6 +302,22 @@ library BokkyPooBahsDateTimeLibrary {
         uint toDay;
         (fromYear, fromMonth, fromDay) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
         (toYear, toMonth, toDay) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
-        _years = toYear - fromYear;
+        _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;
+    }
+    function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days) {
+        require(fromTimestamp <= toTimestamp);
+        _days = (toTimestamp - fromTimestamp) / SECONDS_PER_DAY;
+    }
+    function diffHours(uint fromTimestamp, uint toTimestamp) public pure returns (uint _hours) {
+        require(fromTimestamp <= toTimestamp);
+        _hours = (toTimestamp - fromTimestamp) / SECONDS_PER_HOUR;
+    }
+    function diffMinutes(uint fromTimestamp, uint toTimestamp) public pure returns (uint _minutes) {
+        require(fromTimestamp <= toTimestamp);
+        _minutes = (toTimestamp - fromTimestamp) / SECONDS_PER_MINUTE;
+    }
+    function diffSeconds(uint fromTimestamp, uint toTimestamp) public pure returns (uint _seconds) {
+        require(fromTimestamp <= toTimestamp);
+        _seconds = toTimestamp - fromTimestamp;
     }
 }
\ No newline at end of file
diff --git a/test/TestDateTime.js b/test/TestDateTime.js
index e4b281b..3d3129a 100644
--- a/test/TestDateTime.js
+++ b/test/TestDateTime.js
@@ -3,13 +3,13 @@ var testDateTimeOutput={
   {
     "BokkyPooBahsDateTimeLibrary.sol:BokkyPooBahsDateTimeLibrary" : 
     {
-      "abi" : 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+      "abi" : 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constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffMonths\",\"outputs\":[{\"name\":\"_months\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"name\":\"addMinutes\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getSecond\",\"outputs\":[{\"name\":\"second\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"name\":\"addSeconds\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_days\",\"type\":\"uint256\"}],\"name\":\"_daysToDate\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getYear\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"name\":\"subMinutes\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getMonth\",\"outputs\":[{\"name\":\"month\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_months\",\"type\":\"uint256\"}],\"name\":\"subMonths\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"}],\"name\":\"_isLeapYear\",\"outputs\":[{\"name\":\"leapYear\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isLeapYear\",\"outputs\":[{\"name\":\"leapYear\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_days\",\"type\":\"uint256\"}],\"name\":\"subDays\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffDays\",\"outputs\":[{\"name\":\"_days\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isWeekDay\",\"outputs\":[{\"name\":\"weekDay\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"timestampToDate\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"timestampToDateTime\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"},{\"name\":\"hour\",\"type\":\"uint256\"},{\"name\":\"minute\",\"type\":\"uint256\"},{\"name\":\"second\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"name\":\"subSeconds\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getMinute\",\"outputs\":[{\"name\":\"minute\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffYears\",\"outputs\":[{\"name\":\"_years\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"}]",
+      "bin" : 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     },
     "TestDateTime.sol:TestDateTime" : 
     {
-      "abi" : "[{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_hours\",\"type\":\"uint256\"}],\"name\":\"subHours\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getDaysInMonth\",\"outputs\":[{\"name\":\"daysInMonth\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"nextYear\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"name\":\"timestampFromDate\",\"outputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getDayOfWeek\",\"outputs\":[{\"name\":\"dayOfWeek\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getHour\",\"outputs\":[{\"name\":\"hour\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"}],\"name\":\"_getDaysInMonth\",\"outputs\":[{\"name\":\"daysInMonth\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_months\",\"type\":\"uint256\"}],\"name\":\"addMonths\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isWeekEnd\",\"outputs\":[{\"name\":\"weekEnd\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_years\",\"type\":\"uint256\"}],\"name\":\"addYears\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_years\",\"type\":\"uint256\"}],\"name\":\"subYears\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_hours\",\"type\":\"uint256\"}],\"name\":\"addHours\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"},{\"name\":\"hour\",\"type\":\"uint256\"},{\"name\":\"minute\",\"type\":\"uint256\"},{\"name\":\"second\",\"type\":\"uint256\"}],\"name\":\"timestampFromDateTime\",\"outputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getDay\",\"outputs\":[{\"name\":\"day\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_days\",\"type\":\"uint256\"}],\"name\":\"addDays\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffMonths\",\"outputs\":[{\"name\":\"_months\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"name\":\"addMinutes\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getSecond\",\"outputs\":[{\"name\":\"second\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"name\":\"addSeconds\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getYear\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"name\":\"subMinutes\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getMonth\",\"outputs\":[{\"name\":\"month\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_months\",\"type\":\"uint256\"}],\"name\":\"subMonths\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"}],\"name\":\"_isLeapYear\",\"outputs\":[{\"name\":\"leapYear\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isLeapYear\",\"outputs\":[{\"name\":\"leapYear\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_days\",\"type\":\"uint256\"}],\"name\":\"subDays\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffDays\",\"outputs\":[{\"name\":\"_days\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isWeekDay\",\"outputs\":[{\"name\":\"weekDay\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"timestampToDate\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"timestampToDateTime\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"},{\"name\":\"hour\",\"type\":\"uint256\"},{\"name\":\"minute\",\"type\":\"uint256\"},{\"name\":\"second\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"name\":\"subSeconds\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"test\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getMinute\",\"outputs\":[{\"name\":\"minute\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffYears\",\"outputs\":[{\"name\":\"_years\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"}]",
-      "bin" : 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PooBahsDateTimeLibrary.sol:Bokk__634b32150284846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b604080517f5e05bd6d000000000000000000000000000000000000000000000000000000008152600481018890526024810187905260448101869052606481018590526084810184905260a48101839052905160009173__BokkyPooBahsDateTimeLibrary.sol:Bokk__91635e05bd6d9160c480820192602092909190829003018186803b158015610a8a57600080fd5b505af4158015610a9e573d6000803e3d6000fd5b505050506040513d6020811015610ab457600080fd5b5051979650505050505050565b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6365c72840836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561066057600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__637217523c84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__637be3410984846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6389a3a00d84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__638aa001fc836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561066057600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__638d4a2d3984846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6392d66313836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561066057600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__639e524caa84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63a324ad24836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561066057600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63ad203bd484846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63b05eb08d836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561066057600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63b8d16dbc836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561066057600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63c7b6fd6a84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63c9d3462284846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63d6582d0d836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561066057600080fd5b600080600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63de5101af856040518263ffffffff1660e060020a0281526004018082815260200191505060606040518083038186803b15801561104457600080fd5b505af4158015611058573d6000803e3d6000fd5b505050506040513d606081101561106e57600080fd5b508051602082015160409092015190969195509350915050565b60008060008060008073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63ea1c1690886040518263ffffffff1660e060020a0281526004018082815260200191505060c06040518083038186803b1580156110e357600080fd5b505af41580156110f7573d6000803e3d6000fd5b505050506040513d60c081101561110d57600080fd5b508051602082015160408301516060840151608085015160a090950151939c929b5090995097509195509350915050565b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63f615ed5484846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd5b604080517f442b8c79000000000000000000000000000000000000000000000000000000008152426004820181905260016024830152915173__BokkyPooBahsDateTimeLibrary.sol:Bokk__9163442b8c79916044808301926020929190829003018186803b15801561120d57600080fd5b505af4158015611221573d6000803e3d6000fd5b505050506040513d602081101561123757600080fd5b505160005550565b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63fa93f883836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561066057600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63ff2258cb84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b1580156105d957600080fd00a165627a7a72305820a6a3c68fe309689c27f4fea33aaeaef07663d2d55932ee584f76415551af4ee10029"
+      "abi" : "[{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_hours\",\"type\":\"uint256\"}],\"name\":\"subHours\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffMinutes\",\"outputs\":[{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getDaysInMonth\",\"outputs\":[{\"name\":\"daysInMonth\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"nextYear\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"name\":\"timestampFromDate\",\"outputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getDayOfWeek\",\"outputs\":[{\"name\":\"dayOfWeek\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffHours\",\"outputs\":[{\"name\":\"_hours\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getHour\",\"outputs\":[{\"name\":\"hour\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"}],\"name\":\"_getDaysInMonth\",\"outputs\":[{\"name\":\"daysInMonth\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_months\",\"type\":\"uint256\"}],\"name\":\"addMonths\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isWeekEnd\",\"outputs\":[{\"name\":\"weekEnd\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_years\",\"type\":\"uint256\"}],\"name\":\"addYears\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_years\",\"type\":\"uint256\"}],\"name\":\"subYears\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_hours\",\"type\":\"uint256\"}],\"name\":\"addHours\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"},{\"name\":\"hour\",\"type\":\"uint256\"},{\"name\":\"minute\",\"type\":\"uint256\"},{\"name\":\"second\",\"type\":\"uint256\"}],\"name\":\"timestampFromDateTime\",\"outputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffSeconds\",\"outputs\":[{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getDay\",\"outputs\":[{\"name\":\"day\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_days\",\"type\":\"uint256\"}],\"name\":\"addDays\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffMonths\",\"outputs\":[{\"name\":\"_months\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"name\":\"addMinutes\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getSecond\",\"outputs\":[{\"name\":\"second\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"name\":\"addSeconds\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getYear\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_minutes\",\"type\":\"uint256\"}],\"name\":\"subMinutes\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getMonth\",\"outputs\":[{\"name\":\"month\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_months\",\"type\":\"uint256\"}],\"name\":\"subMonths\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"year\",\"type\":\"uint256\"}],\"name\":\"_isLeapYear\",\"outputs\":[{\"name\":\"leapYear\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isLeapYear\",\"outputs\":[{\"name\":\"leapYear\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_days\",\"type\":\"uint256\"}],\"name\":\"subDays\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffDays\",\"outputs\":[{\"name\":\"_days\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"isWeekDay\",\"outputs\":[{\"name\":\"weekDay\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"timestampToDate\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"timestampToDateTime\",\"outputs\":[{\"name\":\"year\",\"type\":\"uint256\"},{\"name\":\"month\",\"type\":\"uint256\"},{\"name\":\"day\",\"type\":\"uint256\"},{\"name\":\"hour\",\"type\":\"uint256\"},{\"name\":\"minute\",\"type\":\"uint256\"},{\"name\":\"second\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"},{\"name\":\"_seconds\",\"type\":\"uint256\"}],\"name\":\"subSeconds\",\"outputs\":[{\"name\":\"newTimestamp\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"test\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"timestamp\",\"type\":\"uint256\"}],\"name\":\"getMinute\",\"outputs\":[{\"name\":\"minute\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"fromTimestamp\",\"type\":\"uint256\"},{\"name\":\"toTimestamp\",\"type\":\"uint256\"}],\"name\":\"diffYears\",\"outputs\":[{\"name\":\"_years\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"}]",
+      "bin" : "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__BokkyPooBahsDateTimeLibrary.sol:Bokk__6250155384846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b505af415801561065f573d6000803e3d6000fd5b505050506040513d602081101561067557600080fd5b50519392505050565b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6302e98e0d84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6310848ddf836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b505af4158015610742573d6000803e3d6000fd5b505050506040513d602081101561075857600080fd5b505192915050565b60005481565b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__631f4f77b28585856040518463ffffffff1660e060020a02815260040180848152602001838152602001828152602001935050505060206040518083038186803b1580156107ca57600080fd5b505af41580156107de573d6000803e3d6000fd5b505050506040513d60208110156107f457600080fd5b5051949350505050565b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6322f8a2b8836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__632af123b884846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__633e239e1a836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__633f9e0eb784846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__634355644d84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__634371c465836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63442b8c7984846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63444fda8284846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__634b32150284846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b604080517f5e05bd6d000000000000000000000000000000000000000000000000000000008152600481018890526024810187905260448101869052606481018590526084810184905260a48101839052905160009173__BokkyPooBahsDateTimeLibrary.sol:Bokk__91635e05bd6d9160c480820192602092909190829003018186803b158015610bb457600080fd5b505af4158015610bc8573d6000803e3d6000fd5b505050506040513d6020811015610bde57600080fd5b5051979650505050505050565b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6362fb969784846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6365c72840836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__637217523c84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__637be3410984846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6389a3a00d84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__638aa001fc836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__638d4a2d3984846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__6392d66313836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__639e524caa84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63a324ad24836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63ad203bd484846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63b05eb08d836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63b8d16dbc836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63c7b6fd6a84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63c9d3462284846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63d6582d0d836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600080600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63de5101af856040518263ffffffff1660e060020a0281526004018082815260200191505060606040518083038186803b1580156111ca57600080fd5b505af41580156111de573d6000803e3d6000fd5b505050506040513d60608110156111f457600080fd5b508051602082015160409092015190969195509350915050565b60008060008060008073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63ea1c1690886040518263ffffffff1660e060020a0281526004018082815260200191505060c06040518083038186803b15801561126957600080fd5b505af415801561127d573d6000803e3d6000fd5b505050506040513d60c081101561129357600080fd5b508051602082015160408301516060840151608085015160a090950151939c929b5090995097509195509350915050565b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63f615ed5484846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd5b604080517f442b8c79000000000000000000000000000000000000000000000000000000008152426004820181905260016024830152915173__BokkyPooBahsDateTimeLibrary.sol:Bokk__9163442b8c79916044808301926020929190829003018186803b15801561139357600080fd5b505af41580156113a7573d6000803e3d6000fd5b505050506040513d60208110156113bd57600080fd5b505160005550565b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63fa93f883836040518263ffffffff1660e060020a0281526004018082815260200191505060206040518083038186803b15801561072e57600080fd5b600073__BokkyPooBahsDateTimeLibrary.sol:Bokk__63ff2258cb84846040518363ffffffff1660e060020a028152600401808381526020018281526020019250505060206040518083038186803b15801561064b57600080fd00a165627a7a72305820e8faa69588a39bb3eefb854c71bd9282dba51528962a6ebc7fb6b11697c4c3270029"
     }
   },
   "version" : "0.4.24+commit.e67f0147.Darwin.appleclang"
diff --git a/test/TestDateTime.sol b/test/TestDateTime.sol
index feb5b81..765bdaa 100644
--- a/test/TestDateTime.sol
+++ b/test/TestDateTime.sol
@@ -116,13 +116,22 @@ contract TestDateTime {
         newTimestamp = BokkyPooBahsDateTimeLibrary.subSeconds(timestamp, _seconds);
     }
 
-    function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days) {
-        _days = BokkyPooBahsDateTimeLibrary.diffDays(fromTimestamp, toTimestamp);
+    function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years) {
+        _years = BokkyPooBahsDateTimeLibrary.diffYears(fromTimestamp, toTimestamp);
     }
     function diffMonths(uint fromTimestamp, uint toTimestamp) public pure returns (uint _months) {
         _months = BokkyPooBahsDateTimeLibrary.diffMonths(fromTimestamp, toTimestamp);
     }
-    function diffYears(uint fromTimestamp, uint toTimestamp) public pure returns (uint _years) {
-        _years = BokkyPooBahsDateTimeLibrary.diffYears(fromTimestamp, toTimestamp);
+    function diffDays(uint fromTimestamp, uint toTimestamp) public pure returns (uint _days) {
+        _days = BokkyPooBahsDateTimeLibrary.diffDays(fromTimestamp, toTimestamp);
+    }
+    function diffHours(uint fromTimestamp, uint toTimestamp) public pure returns (uint _hours) {
+        _hours = BokkyPooBahsDateTimeLibrary.diffHours(fromTimestamp, toTimestamp);
+    }
+    function diffMinutes(uint fromTimestamp, uint toTimestamp) public pure returns (uint _minutes) {
+        _minutes = BokkyPooBahsDateTimeLibrary.diffMinutes(fromTimestamp, toTimestamp);
+    }
+    function diffSeconds(uint fromTimestamp, uint toTimestamp) public pure returns (uint _seconds) {
+        _seconds = BokkyPooBahsDateTimeLibrary.diffSeconds(fromTimestamp, toTimestamp);
     }
 }
\ No newline at end of file
diff --git a/test/deploymentData.js b/test/deploymentData.js
index 6f8c832..ce48404 100644
--- a/test/deploymentData.js
+++ b/test/deploymentData.js
@@ -1,7 +1,7 @@
-var dateTimeLibAddress="0xf235febef748bc1586d8aea01f093012eea7b3c8";
-var dateTimeLibAbi=[{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_hours","type":"uint256"}],"name":"subHours","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDaysInMonth","outputs":[{"name":"daysInMonth","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"}],"name":"_daysFromDate","outputs":[{"name":"_days","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"}],"name":"timestampFromDate","outputs":[{"name":"timestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDayOfWeek","outputs":[{"name":"dayOfWeek","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getHour","outputs":[{"name":"hour","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"}],"name":"_getDaysInMonth","outputs":[{"name":"daysInMonth","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_months","type":"uint256"}],"name":"addMonths","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"isWeekEnd","outputs":[{"name":"weekEnd","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_years","type":"uint256"}],"name":"addYears","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_years","type":"uint256"}],"name":"subYears","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_hours","type":"uint256"}],"name":"addHours","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"},{"name":"hour","type":"uint256"},{"name":"minute","type":"uint256"},{"name":"second","type":"uint256"}],"name":"timestampFromDateTime","outputs":[{"name":"timestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDay","outputs":[{"name":"day","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_days","type":"uint256"}],"name":"addDays","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffMonths","outputs":[{"name":"_months","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_minutes","type":"uint256"}],"name":"addMinutes","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getSecond","outputs":[{"name":"second","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_seconds","type":"uint256"}],"name":"addSeconds","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"_days","type":"uint256"}],"name":"_daysToDate","outputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getYear","outputs":[{"name":"year","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_minutes","type":"uint256"}],"name":"subMinutes","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getMonth","outputs":[{"name":"month","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_months","type":"uint256"}],"name":"subMonths","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"}],"name":"_isLeapYear","outputs":[{"name":"leapYear","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"isLeapYear","outputs":[{"name":"leapYear","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_days","type":"uint256"}],"name":"subDays","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffDays","outputs":[{"name":"_days","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"isWeekDay","outputs":[{"name":"weekDay","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"timestampToDate","outputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"timestampToDateTime","outputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"},{"name":"hour","type":"uint256"},{"name":"minute","type":"uint256"},{"name":"second","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_seconds","type":"uint256"}],"name":"subSeconds","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getMinute","outputs":[{"name":"minute","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffYears","outputs":[{"name":"_years","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"}];
+var dateTimeLibAddress="0x0a91add9e3e97057980da7826043aab2a2d4c35b";
+var 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 var dateTimeLib=eth.contract(dateTimeLibAbi).at(dateTimeLibAddress);
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testDateTimeAbi=[{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_hours","type":"uint256"}],"name":"subHours","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDaysInMonth","outputs":[{"name":"daysInMonth","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[],"name":"nextYear","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"}],"name":"timestampFromDate","outputs":[{"name":"timestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDayOfWeek","outputs":[{"name":"dayOfWeek","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getHour","outputs":[{"name":"hour","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"}],"name":"_getDaysInMonth","outputs":[{"name":"daysInMonth","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_months","type":"uint256"}],"name":"addMonths","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"isWeekEnd","outputs":[{"name":"weekEnd","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_years","type":"uint256"}],"name":"addYears","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_years","type":"uint256"}],"name":"subYears","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_hours","type":"uint256"}],"name":"addHours","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"},{"name":"hour","type":"uint256"},{"name":"minute","type":"uint256"},{"name":"second","type":"uint256"}],"name":"timestampFromDateTime","outputs":[{"name":"timestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDay","outputs":[{"name":"day","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_days","type":"uint256"}],"name":"addDays","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffMonths","outputs":[{"name":"_months","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_minutes","type":"uint256"}],"name":"addMinutes","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getSecond","outputs":[{"name":"second","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_seconds","type":"uint256"}],"name":"addSeconds","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getYear","outputs":[{"name":"year","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_minutes","type":"uint256"}],"name":"subMinutes","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getMonth","outputs":[{"name":"month","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_months","type":"uint2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+var testDateTimeAddress="0x821ca8becdbfb00ca55e722908796a375bc2d538";
+var testDateTimeAbi=[{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_hours","type":"uint256"}],"name":"subHours","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffMinutes","outputs":[{"name":"_minutes","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDaysInMonth","outputs":[{"name":"daysInMonth","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[],"name":"nextYear","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"}],"name":"timestampFromDate","outputs":[{"name":"timestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDayOfWeek","outputs":[{"name":"dayOfWeek","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffHours","outputs":[{"name":"_hours","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getHour","outputs":[{"name":"hour","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"}],"name":"_getDaysInMonth","outputs":[{"name":"daysInMonth","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_months","type":"uint256"}],"name":"addMonths","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"isWeekEnd","outputs":[{"name":"weekEnd","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_years","type":"uint256"}],"name":"addYears","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_years","type":"uint256"}],"name":"subYears","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_hours","type":"uint256"}],"name":"addHours","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"},{"name":"hour","type":"uint256"},{"name":"minute","type":"uint256"},{"name":"second","type":"uint256"}],"name":"timestampFromDateTime","outputs":[{"name":"timestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffSeconds","outputs":[{"name":"_seconds","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDay","outputs":[{"name":"day","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_days","type":"uint256"}],"name":"addDays","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffMonths","outputs":[{"name":"_months","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_minutes","type":"uint256"}],"name":"addMinutes","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getSecond","outputs":[{"name":"second","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_seconds","type":"uint256"}],"name":"addSeconds","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"funct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 var testDateTime=eth.contract(testDateTimeAbi).at(testDateTimeAddress);
 console.log("testDateTime=" + JSON.stringify(testDateTime));
diff --git a/test/test1output.txt b/test/test1output.txt
index 097c2d4..22d7047 100644
--- a/test/test1output.txt
+++ b/test/test1output.txt
@@ -9,9 +9,9 @@ TESTDATETIMEJS     = 'TestDateTime.js'
 DEPLOYMENTDATA     = 'deploymentData.js'
 TEST1OUTPUT        = 'test1output.txt'
 TEST1RESULTS       = 'test1results.txt'
-CURRENTTIME        = '1527224637' 'Fri May 25 15:03:57 2018'
-START_DATE         = '1527224682' 'Fri May 25 15:04:42 2018'
-END_DATE           = '1527224757' 'Fri May 25 15:05:57 2018'
+CURRENTTIME        = '1527269302' 'Sat May 26 03:28:22 2018'
+START_DATE         = '1527269347' 'Sat May 26 03:29:07 2018'
+END_DATE           = '1527269422' 'Sat May 26 03:30:22 2018'
 --- Differences ../contracts/BokkyPooBahsDateTimeLibrary.sol BokkyPooBahsDateTimeLibrary.sol ---
 
 --- Differences ../contracts/TestDateTime.sol TestDateTime.sol ---
@@ -22,7 +22,7 @@ Welcome to the Geth JavaScript console!
 
 instance: Geth/v1.8.6-stable-12683fec/darwin-amd64/go1.10
 coinbase: 0xa00af22d07c87d96eeeb0ed583f8f6ac7812827e
-at block: 25059 (Fri, 25 May 2018 15:03:57 AEST)
+at block: 261 (Sat, 26 May 2018 03:28:23 AEST)
  datadir: /Users/bok/Projects/BokkyPooBahsDateTimeLibrary/test/testchain
  modules: admin:1.0 clique:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 shh:1.0 txpool:1.0 web3:1.0
 
@@ -118,13 +118,13 @@ undefined
 ... 
 undefined
 > 
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-DATA: var 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-RESULT:  1 0xa11aae29840fbb5c86e6fd4cf809eba183aef433       -0.012024928000000000           0.000000000000000000 Account #1 - Contract Owner
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-RESULT: 12 0xf235febef748bc1586d8aea01f093012eea7b3c8        0.000000000000000000           0.000000000000000000 DateTime Library
+RESULT: 12 0x0a91add9e3e97057980da7826043aab2a2d4c35b        0.000000000000000000           0.000000000000000000 DateTime Library
 RESULT: -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
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 RESULT: -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
@@ -145,7 +145,7 @@ undefined
 RESULT: PASS Deploy DateTime Library
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-RESULT: dateTimeLibTx status=0x1 Success gas=6000000 gasUsed=751558 costETH=0.012024928 costUSD=8.12536409888 @ ETH/USD=675.71 gasPrice=16 gwei block=25071 txIx=0 txId=0xc76da0071345cc0374d148bbc1671d1b13893be386fd35dbc40eade88c7d70e7 @ 1527224649 Fri, 25 May 2018 05:04:09 UTC
+RESULT: dateTimeLibTx status=0x1 Success gas=6000000 gasUsed=789718 costETH=0.012635488 costUSD=8.53792559648 @ ETH/USD=675.71 gasPrice=16 gwei block=271 txIx=0 txId=0x92d5d2ebe35895a20e2eda13c4e62634b25a4c118a69a7bd1fcadaceaeb61055 @ 1527269313 Fri, 25 May 2018 17:28:33 UTC
 undefined
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+DATA: var testDateTimeAddress="0x821ca8becdbfb00ca55e722908796a375bc2d538";
+DATA: var testDateTimeAbi=[{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_hours","type":"uint256"}],"name":"subHours","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffMinutes","outputs":[{"name":"_minutes","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDaysInMonth","outputs":[{"name":"daysInMonth","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[],"name":"nextYear","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"}],"name":"timestampFromDate","outputs":[{"name":"timestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDayOfWeek","outputs":[{"name":"dayOfWeek","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffHours","outputs":[{"name":"_hours","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getHour","outputs":[{"name":"hour","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"}],"name":"_getDaysInMonth","outputs":[{"name":"daysInMonth","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_months","type":"uint256"}],"name":"addMonths","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"isWeekEnd","outputs":[{"name":"weekEnd","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_years","type":"uint256"}],"name":"addYears","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_years","type":"uint256"}],"name":"subYears","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_hours","type":"uint256"}],"name":"addHours","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"},{"name":"hour","type":"uint256"},{"name":"minute","type":"uint256"},{"name":"second","type":"uint256"}],"name":"timestampFromDateTime","outputs":[{"name":"timestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffSeconds","outputs":[{"name":"_seconds","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getDay","outputs":[{"name":"day","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_days","type":"uint256"}],"name":"addDays","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffMonths","outputs":[{"name":"_months","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_minutes","type":"uint256"}],"name":"addMinutes","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getSecond","outputs":[{"name":"second","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_seconds","type":"uint256"}],"name":"addSeconds","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getYear","outputs":[{"name":"year","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_minutes","type":"uint256"}],"name":"subMinutes","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getMonth","outputs":[{"name":"month","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_months","type":"uint256"}],"name":"subMonths","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"year","type":"uint256"}],"name":"_isLeapYear","outputs":[{"name":"leapYear","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"isLeapYear","outputs":[{"name":"leapYear","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_days","type":"uint256"}],"name":"subDays","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffDays","outputs":[{"name":"_days","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"isWeekDay","outputs":[{"name":"weekDay","type":"bool"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"timestampToDate","outputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"timestampToDateTime","outputs":[{"name":"year","type":"uint256"},{"name":"month","type":"uint256"},{"name":"day","type":"uint256"},{"name":"hour","type":"uint256"},{"name":"minute","type":"uint256"},{"name":"second","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"},{"name":"_seconds","type":"uint256"}],"name":"subSeconds","outputs":[{"name":"newTimestamp","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":false,"inputs":[],"name":"test","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"getMinute","outputs":[{"name":"minute","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"fromTimestamp","type":"uint256"},{"name":"toTimestamp","type":"uint256"}],"name":"diffYears","outputs":[{"name":"_years","type":"uint256"}],"payable":false,"stateMutability":"pure","type":"function"}];
 DATA: var testDateTime=eth.contract(testDateTimeAbi).at(testDateTimeAddress);
 DATA: console.log("testDateTime=" + JSON.stringify(testDateTime));
 RESULT:  # Account                                             EtherBalanceChange                          Token Name
 RESULT: -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
-RESULT:  0 0xa00af22d07c87d96eeeb0ed583f8f6ac7812827e        0.033699968000000000           0.000000000000000000 Account #0 - Miner
-RESULT:  1 0xa11aae29840fbb5c86e6fd4cf809eba183aef433       -0.033699968000000000           0.000000000000000000 Account #1 - Contract Owner
+RESULT:  0 0xa00af22d07c87d96eeeb0ed583f8f6ac7812827e        0.035975008000000000           0.000000000000000000 Account #0 - Miner
+RESULT:  1 0xa11aae29840fbb5c86e6fd4cf809eba183aef433       -0.035975008000000000           0.000000000000000000 Account #1 - Contract Owner
 RESULT:  2 0xa22ab8a9d641ce77e06d98b7d7065d324d3d6976        0.000000000000000000           0.000000000000000000 Account #2 - Alice
 RESULT:  3 0xa33a6c312d9ad0e0f2e95541beed0cc081621fd0        0.000000000000000000           0.000000000000000000 Account #3 - Bob
 RESULT:  4 0xa44a08d3f6933c69212114bb66e2df1813651844        0.000000000000000000           0.000000000000000000 Account #4 - Carol
@@ -212,8 +212,8 @@ RESULT:  8 0xa88a05d2b88283ce84c8325760b72a64591279a2        0.00000000000000000
 RESULT:  9 0xa99a0ae3354c06b1459fd441a32a3f71005d7da0        0.000000000000000000           0.000000000000000000 Account #9
 RESULT: 10 0xaaaa9de1e6c564446ebca0fd102d8bd92093c756        0.000000000000000000           0.000000000000000000 Account #10
 RESULT: 11 0xabba43e7594e3b76afb157989e93c6621497fd4b        0.000000000000000000           0.000000000000000000 Account #11
-RESULT: 12 0xf235febef748bc1586d8aea01f093012eea7b3c8        0.000000000000000000           0.000000000000000000 DateTime Library
-RESULT: 13 0x27daa9fe81944d721dc95e09f54c8bd3a90a5603        0.000000000000000000           0.000000000000000000 TestDateTime
+RESULT: 12 0x0a91add9e3e97057980da7826043aab2a2d4c35b        0.000000000000000000           0.000000000000000000 DateTime Library
+RESULT: 13 0x821ca8becdbfb00ca55e722908796a375bc2d538        0.000000000000000000           0.000000000000000000 TestDateTime
 RESULT: -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
 RESULT:                                                                                     0.000000000000000000 Total Token Balances
 RESULT: -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
@@ -223,7 +223,7 @@ undefined
 RESULT: PASS Deploy TestDateTime Contract
 1
 > 
-RESULT: testDateTimeAddress=0x27daa9fe81944d721dc95e09f54c8bd3a90a5603 status=0x1 Success gas=6000000 gasUsed=1354690 costETH=0.02167504 costUSD=14.6460412784 @ ETH/USD=675.71 gasPrice=16 gwei block=25073 txIx=0 txId=0x4a1b70c5255f3f89d46667e6cc9ad87a87ea1f5585ffe0d8a5430a960d9000c8 @ 1527224651 Fri, 25 May 2018 05:04:11 UTC
+RESULT: testDateTimeAddress=0x821ca8becdbfb00ca55e722908796a375bc2d538 status=0x1 Success gas=6000000 gasUsed=1458720 costETH=0.02333952 costUSD=15.7707470592 @ ETH/USD=675.71 gasPrice=16 gwei block=273 txIx=0 txId=0x79c7c0cdf772e9817af825e325739a73151b03671dd4a57f4d30446cd46f89cf @ 1527269315 Fri, 25 May 2018 17:28:35 UTC
 undefined
 > 
 RESULT: 
@@ -661,6 +661,17 @@ undefined
 ... 
 ... 
 ... 
+... 
+... 
+...... 
+...... 
+... 
+...... 
+...... 
+... 
+...... 
+...... 
+... 
 ...... 
 ...... 
 ... 
@@ -671,10 +682,15 @@ undefined
 ...... 
 ... 
 ... 
-RESULT: ---------- Test diff{Days|Months|Years} ----------
-RESULT: PASS 2017,10,21,1,2,3 to 2017,10,21,1,2,3 has 635 days diff
-RESULT: PASS 2017,10,21,1,2,3 to 2017,10,21,1,2,3 has 21 months diff
-RESULT: PASS 2017,10,21,1,2,3 to 2017,10,21,1,2,3 has 2 years diff
+RESULT: ---------- Test diff{Years|Months|Days|Hours|Minutes|Seconds} ----------
+RESULT: fromTimestamp=1508547723 2017,10,21,1,2,3
+RESULT: toTimestamp=1563422706 2019,7,18,4,5,6
+RESULT: PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 2 years diff
+RESULT: PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 21 months diff
+RESULT: PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 635 days diff
+RESULT: PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 15,243 hours diff
+RESULT: PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 914,583 minutes diff
+RESULT: PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 54,874,983 seconds diff
 RESULT: 
 undefined
 > 
diff --git a/test/test1results.txt b/test/test1results.txt
index f76eac6..eb6f94b 100644
--- a/test/test1results.txt
+++ b/test/test1results.txt
@@ -20,8 +20,8 @@
 ----- Deploy DateTime Library -----
  # Account                                             EtherBalanceChange                          Token Name
 -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
- 0 0xa00af22d07c87d96eeeb0ed583f8f6ac7812827e        0.012024928000000000           0.000000000000000000 Account #0 - Miner
- 1 0xa11aae29840fbb5c86e6fd4cf809eba183aef433       -0.012024928000000000           0.000000000000000000 Account #1 - Contract Owner
+ 0 0xa00af22d07c87d96eeeb0ed583f8f6ac7812827e        0.012635488000000000           0.000000000000000000 Account #0 - Miner
+ 1 0xa11aae29840fbb5c86e6fd4cf809eba183aef433       -0.012635488000000000           0.000000000000000000 Account #1 - Contract Owner
  2 0xa22ab8a9d641ce77e06d98b7d7065d324d3d6976        0.000000000000000000           0.000000000000000000 Account #2 - Alice
  3 0xa33a6c312d9ad0e0f2e95541beed0cc081621fd0        0.000000000000000000           0.000000000000000000 Account #3 - Bob
  4 0xa44a08d3f6933c69212114bb66e2df1813651844        0.000000000000000000           0.000000000000000000 Account #4 - Carol
@@ -32,19 +32,19 @@
  9 0xa99a0ae3354c06b1459fd441a32a3f71005d7da0        0.000000000000000000           0.000000000000000000 Account #9
 10 0xaaaa9de1e6c564446ebca0fd102d8bd92093c756        0.000000000000000000           0.000000000000000000 Account #10
 11 0xabba43e7594e3b76afb157989e93c6621497fd4b        0.000000000000000000           0.000000000000000000 Account #11
-12 0xf235febef748bc1586d8aea01f093012eea7b3c8        0.000000000000000000           0.000000000000000000 DateTime Library
+12 0x0a91add9e3e97057980da7826043aab2a2d4c35b        0.000000000000000000           0.000000000000000000 DateTime Library
 -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
                                                                                     0.000000000000000000 Total Token Balances
 -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
 
 PASS Deploy DateTime Library
-dateTimeLibTx status=0x1 Success gas=6000000 gasUsed=751558 costETH=0.012024928 costUSD=8.12536409888 @ ETH/USD=675.71 gasPrice=16 gwei block=25071 txIx=0 txId=0xc76da0071345cc0374d148bbc1671d1b13893be386fd35dbc40eade88c7d70e7 @ 1527224649 Fri, 25 May 2018 05:04:09 UTC
+dateTimeLibTx status=0x1 Success gas=6000000 gasUsed=789718 costETH=0.012635488 costUSD=8.53792559648 @ ETH/USD=675.71 gasPrice=16 gwei block=271 txIx=0 txId=0x92d5d2ebe35895a20e2eda13c4e62634b25a4c118a69a7bd1fcadaceaeb61055 @ 1527269313 Fri, 25 May 2018 17:28:33 UTC
 
 ---------- Deploy TestDateTime Contract ----------
  # Account                                             EtherBalanceChange                          Token Name
 -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
- 0 0xa00af22d07c87d96eeeb0ed583f8f6ac7812827e        0.033699968000000000           0.000000000000000000 Account #0 - Miner
- 1 0xa11aae29840fbb5c86e6fd4cf809eba183aef433       -0.033699968000000000           0.000000000000000000 Account #1 - Contract Owner
+ 0 0xa00af22d07c87d96eeeb0ed583f8f6ac7812827e        0.035975008000000000           0.000000000000000000 Account #0 - Miner
+ 1 0xa11aae29840fbb5c86e6fd4cf809eba183aef433       -0.035975008000000000           0.000000000000000000 Account #1 - Contract Owner
  2 0xa22ab8a9d641ce77e06d98b7d7065d324d3d6976        0.000000000000000000           0.000000000000000000 Account #2 - Alice
  3 0xa33a6c312d9ad0e0f2e95541beed0cc081621fd0        0.000000000000000000           0.000000000000000000 Account #3 - Bob
  4 0xa44a08d3f6933c69212114bb66e2df1813651844        0.000000000000000000           0.000000000000000000 Account #4 - Carol
@@ -55,14 +55,14 @@ dateTimeLibTx status=0x1 Success gas=6000000 gasUsed=751558 costETH=0.012024928
  9 0xa99a0ae3354c06b1459fd441a32a3f71005d7da0        0.000000000000000000           0.000000000000000000 Account #9
 10 0xaaaa9de1e6c564446ebca0fd102d8bd92093c756        0.000000000000000000           0.000000000000000000 Account #10
 11 0xabba43e7594e3b76afb157989e93c6621497fd4b        0.000000000000000000           0.000000000000000000 Account #11
-12 0xf235febef748bc1586d8aea01f093012eea7b3c8        0.000000000000000000           0.000000000000000000 DateTime Library
-13 0x27daa9fe81944d721dc95e09f54c8bd3a90a5603        0.000000000000000000           0.000000000000000000 TestDateTime
+12 0x0a91add9e3e97057980da7826043aab2a2d4c35b        0.000000000000000000           0.000000000000000000 DateTime Library
+13 0x821ca8becdbfb00ca55e722908796a375bc2d538        0.000000000000000000           0.000000000000000000 TestDateTime
 -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
                                                                                     0.000000000000000000 Total Token Balances
 -- ------------------------------------------ --------------------------- ------------------------------ ---------------------------
 
 PASS Deploy TestDateTime Contract
-testDateTimeAddress=0x27daa9fe81944d721dc95e09f54c8bd3a90a5603 status=0x1 Success gas=6000000 gasUsed=1354690 costETH=0.02167504 costUSD=14.6460412784 @ ETH/USD=675.71 gasPrice=16 gwei block=25073 txIx=0 txId=0x4a1b70c5255f3f89d46667e6cc9ad87a87ea1f5585ffe0d8a5430a960d9000c8 @ 1527224651 Fri, 25 May 2018 05:04:11 UTC
+testDateTimeAddress=0x821ca8becdbfb00ca55e722908796a375bc2d538 status=0x1 Success gas=6000000 gasUsed=1458720 costETH=0.02333952 costUSD=15.7707470592 @ ETH/USD=675.71 gasPrice=16 gwei block=273 txIx=0 txId=0x79c7c0cdf772e9817af825e325739a73151b03671dd4a57f4d30446cd46f89cf @ 1527269315 Fri, 25 May 2018 17:28:35 UTC
 
 ---------- Test isLeapYear ----------
 PASS 2000,5,24,1,2,3 is a leap year
@@ -148,10 +148,15 @@ PASS 2015,7,15,1,2,3 - 223,776 hours is 1990/01/03 01:02:03
 PASS 2018,3,1,2,3,4 - 21,600,000 minutes is 1977/02/04 02:03:04
 PASS 2020,3,19,3,4,5 - 788,227,200 seconds is 1995/03/28 03:04:05
 
----------- Test diff{Days|Months|Years} ----------
-PASS 2017,10,21,1,2,3 to 2017,10,21,1,2,3 has 635 days diff
-PASS 2017,10,21,1,2,3 to 2017,10,21,1,2,3 has 21 months diff
-PASS 2017,10,21,1,2,3 to 2017,10,21,1,2,3 has 2 years diff
+---------- Test diff{Years|Months|Days|Hours|Minutes|Seconds} ----------
+fromTimestamp=1508547723 2017,10,21,1,2,3
+toTimestamp=1563422706 2019,7,18,4,5,6
+PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 2 years diff
+PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 21 months diff
+PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 635 days diff
+PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 15,243 hours diff
+PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 914,583 minutes diff
+PASS 2017,10,21,1,2,3 to 2019,7,18,4,5,6 has 54,874,983 seconds diff
 
 ---------- Test timestampToDateTime(...) and timestampFromDateTime(...) against JavaScript Date ----------
 timestampToDateTime(48611)=["1970","1","1","13","30","11"]