diff --git a/server/settings.py b/server/settings.py
index 1b9d991..52e6445 100644
--- a/server/settings.py
+++ b/server/settings.py
@@ -25,6 +25,7 @@
 INSTALLED_APPS = [
     "stt.external_links",
     "stt.filters",
+    "stt.signals",
     "newsroom.auth.saml",
 ]
 
diff --git a/server/setup.cfg b/server/setup.cfg
index 6e6c103..4a76eea 100644
--- a/server/setup.cfg
+++ b/server/setup.cfg
@@ -3,8 +3,8 @@ max-line-length = 120
 exclude = env,venv,node_modules,build
 
 [tool:pytest]
-testpaths = stt_tests
-confcutdir = stt_tests
+testpaths = tests
+confcutdir = tests
 addopts = --tb=short
 
 [mypy]
diff --git a/server/stt/signals.py b/server/stt/signals.py
new file mode 100644
index 0000000..1e281fc
--- /dev/null
+++ b/server/stt/signals.py
@@ -0,0 +1,10 @@
+
+from newsroom.signals import publish_planning
+
+
+def set_planning_all_day(app, item, **kwargs):
+    item["dates"].setdefault("all_day", True)
+
+
+def init_app(app):
+    publish_planning.connect(set_planning_all_day)
diff --git a/server/stt_tests/__init__.py b/server/tests/__init__.py
similarity index 100%
rename from server/stt_tests/__init__.py
rename to server/tests/__init__.py
diff --git a/server/stt_tests/conftest.py b/server/tests/conftest.py
similarity index 100%
rename from server/stt_tests/conftest.py
rename to server/tests/conftest.py
diff --git a/server/stt_tests/fixtures.py b/server/tests/fixtures.py
similarity index 100%
rename from server/stt_tests/fixtures.py
rename to server/tests/fixtures.py
diff --git a/server/stt_tests/stt/__init__.py b/server/tests/stt/__init__.py
similarity index 100%
rename from server/stt_tests/stt/__init__.py
rename to server/tests/stt/__init__.py
diff --git a/server/stt_tests/test_example.py b/server/tests/test_example.py
similarity index 100%
rename from server/stt_tests/test_example.py
rename to server/tests/test_example.py
diff --git a/server/tests/test_signals.py b/server/tests/test_signals.py
new file mode 100644
index 0000000..f80007e
--- /dev/null
+++ b/server/tests/test_signals.py
@@ -0,0 +1,9 @@
+
+from stt.signals import publish_planning, set_planning_all_day
+
+
+def test_publish_planning_signal():
+    publish_planning.connect(set_planning_all_day)
+    item = {"dates": {"start": 1, "end": 1}}
+    publish_planning.send(None, item=item, foo=1)
+    assert item["dates"]["all_day"] is True
diff --git a/server/stt_tests/stt/test_stt_filters.py b/server/tests/test_stt_filters.py
similarity index 100%
rename from server/stt_tests/stt/test_stt_filters.py
rename to server/tests/test_stt_filters.py