agenda/__init__.py

@@ -10,3 +10,8 @@ uk_tz = pytz.timezone("Europe/London")
 def uk_time(d: date, t: time) -> datetime:
     """Combine time and date for UK timezone."""
     return uk_tz.localize(datetime.combine(d, t))
+
+
+def uk_midnight(d: date) -> datetime:
+    """Midnight UK time."""
+    return uk_time(d, datetime.min.time())

agenda/data.py

@@ -32,7 +32,7 @@ from . import (
     thespacedevs,
     travel,
     uk_holiday,
-    uk_tz,
+    uk_midnight,
     waste_schedule,
 )
 from .types import Event, Holiday
@@ -125,11 +125,6 @@ def get_holidays(country: str, start_date: date, end_date: date) -> list[Holiday
     return found
 
 
-def midnight(d: date) -> datetime:
-    """Convert from date to midnight on that day."""
-    return datetime.combine(d, datetime.min.time())
-
-
 def dates_from_rrule(
     rrule: str, start: date, end: date
 ) -> typing.Sequence[datetime | date]:
@@ -137,9 +132,9 @@ def dates_from_rrule(
     all_day = not any(param in rrule for param in ["BYHOUR", "BYMINUTE", "BYSECOND"])
 
     return [
-        i.date() if all_day else uk_tz.localize(i)
-        for i in dateutil.rrule.rrulestr(rrule, dtstart=midnight(start)).between(
-            midnight(start), midnight(end)
+        i.date() if all_day else i
+        for i in dateutil.rrule.rrulestr(rrule, dtstart=uk_midnight(start)).between(
+            uk_midnight(start), uk_midnight(end)
         )
     ]