diff --git a/dbt_semantic_interfaces/call_parameter_sets.py b/dbt_semantic_interfaces/call_parameter_sets.py
index e9cae4f6..9d827194 100644
--- a/dbt_semantic_interfaces/call_parameter_sets.py
+++ b/dbt_semantic_interfaces/call_parameter_sets.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-from typing import Tuple
+from typing import Optional, Tuple
 
 from dbt_semantic_interfaces.references import (
     DimensionReference,
@@ -25,7 +25,7 @@ class TimeDimensionCallParameterSet:
 
     entity_path: Tuple[EntityReference, ...]
     time_dimension_reference: TimeDimensionReference
-    time_granularity: TimeGranularity
+    time_granularity: Optional[TimeGranularity] = None
 
 
 @dataclass(frozen=True)
diff --git a/dbt_semantic_interfaces/parsing/where_filter/parameter_set_factory.py b/dbt_semantic_interfaces/parsing/where_filter/parameter_set_factory.py
index 78561ba0..12a2216f 100644
--- a/dbt_semantic_interfaces/parsing/where_filter/parameter_set_factory.py
+++ b/dbt_semantic_interfaces/parsing/where_filter/parameter_set_factory.py
@@ -1,4 +1,4 @@
-from typing import Sequence
+from typing import Optional, Sequence
 
 from dbt_semantic_interfaces.call_parameter_sets import (
     DimensionCallParameterSet,
@@ -31,7 +31,7 @@ def _exception_message_for_incorrect_format(element_name: str) -> str:
 
     @staticmethod
     def create_time_dimension(
-        time_dimension_name: str, time_granularity_name: str, entity_path: Sequence[str] = ()
+        time_dimension_name: str, time_granularity_name: Optional[str] = None, entity_path: Sequence[str] = ()
     ) -> TimeDimensionCallParameterSet:
         """Gets called by Jinja when rendering {{ TimeDimension(...) }}."""
         group_by_item_name = DunderedNameFormatter.parse_name(time_dimension_name)
@@ -56,7 +56,7 @@ def create_time_dimension(
             entity_path=(
                 tuple(EntityReference(element_name=arg) for arg in entity_path) + group_by_item_name.entity_links
             ),
-            time_granularity=TimeGranularity(time_granularity_name),
+            time_granularity=TimeGranularity(time_granularity_name) if time_granularity_name is not None else None,
         )
 
     @staticmethod
diff --git a/dbt_semantic_interfaces/parsing/where_filter/where_filter_time_dimension.py b/dbt_semantic_interfaces/parsing/where_filter/where_filter_time_dimension.py
index f8022f45..420e286a 100644
--- a/dbt_semantic_interfaces/parsing/where_filter/where_filter_time_dimension.py
+++ b/dbt_semantic_interfaces/parsing/where_filter/where_filter_time_dimension.py
@@ -41,7 +41,7 @@ def __init__(self) -> None:  # noqa
     def create(
         self,
         time_dimension_name: str,
-        time_granularity_name: str,
+        time_granularity_name: Optional[str] = None,
         entity_path: Sequence[str] = (),
         descending: Optional[bool] = None,
         date_part_name: Optional[str] = None,
diff --git a/tests/implementations/where_filter/test_parse_calls.py b/tests/implementations/where_filter/test_parse_calls.py
index f3e069b8..03ba267e 100644
--- a/tests/implementations/where_filter/test_parse_calls.py
+++ b/tests/implementations/where_filter/test_parse_calls.py
@@ -99,7 +99,7 @@ def test_extract_time_dimension_call_parameter_sets() -> None:  # noqa: D
 
 def test_extract_metric_time_dimension_call_parameter_sets() -> None:  # noqa: D
     parse_result = PydanticWhereFilter(
-        where_sql_template=("""{{ TimeDimension('metric_time', 'month') }} = '2020-01-01'""")
+        where_sql_template="""{{ TimeDimension('metric_time', 'month') }} = '2020-01-01'"""
     ).call_parameter_sets
 
     assert parse_result == FilterCallParameterSets(
@@ -215,3 +215,21 @@ def test_where_filter_intersection_error_collection() -> None:
         ParameterSetFactory._exception_message_for_incorrect_format("customer__has_delivery_address")
         not in error_string
     )
+
+
+def test_time_dimension_without_granularity() -> None:  # noqa: D
+    parse_result = PydanticWhereFilter(
+        where_sql_template="{{ TimeDimension('booking__created_at') }} > 2023-09-18"
+    ).call_parameter_sets
+
+    assert parse_result == FilterCallParameterSets(
+        dimension_call_parameter_sets=(),
+        time_dimension_call_parameter_sets=(
+            TimeDimensionCallParameterSet(
+                entity_path=(EntityReference("booking"),),
+                time_dimension_reference=TimeDimensionReference(element_name="created_at"),
+                time_granularity=None,
+            ),
+        ),
+        entity_call_parameter_sets=(),
+    )