diff --git a/agenda/__init__.py b/agenda/__init__.py
index 07698d8..97d4863 100644
--- a/agenda/__init__.py
+++ b/agenda/__init__.py
@@ -11,7 +11,6 @@ from typing import List
 import dateutil
 import dateutil.parser
 import dateutil.tz
-import ephem
 import exchange_calendars
 import holidays
 import lxml
@@ -24,7 +23,7 @@ from dateutil.relativedelta import FR, relativedelta
 
 from agenda import thespacedevs
 
-from . import fx, gwr, markets, waste_schedule
+from . import fx, gwr, markets, sun, waste_schedule
 from .types import Event
 
 warnings.simplefilter(action="ignore", category=FutureWarning)
@@ -35,7 +34,6 @@ warnings.simplefilter(action="ignore", category=FutureWarning)
 # morzine ski lifts
 # chalet availablity calendar
 
-# sunrise and sunset
 # starlink visible
 
 here = dateutil.tz.tzlocal()
@@ -450,23 +448,6 @@ def bristol_waste_collection_events(start_date: date) -> list[Event]:
     return waste_schedule.get_bristol_gov_uk(start_date, data_dir, uprn)
 
 
-def bristol() -> ephem.Observer:
-    """Location of Bristol."""
-    observer = ephem.Observer()
-    observer.lat, observer.lon = "51.4545", "-2.5879"
-    return observer
-
-
-def sunrise(observer: ephem.Observer) -> datetime:
-    """Sunrise."""
-    return typing.cast(datetime, observer.next_rising(ephem.Sun(observer)).datetime())
-
-
-def sunset(observer: ephem.Observer) -> datetime:
-    """Sunrise."""
-    return typing.cast(datetime, observer.next_setting(ephem.Sun(observer)).datetime())
-
-
 def build_events_for_calendar(events: list[Event]) -> list[dict[str, typing.Any]]:
     """Build list of events for FullCalendar."""
     items: list[dict[str, typing.Any]] = []
@@ -562,9 +543,9 @@ def get_data(now: datetime) -> typing.Mapping[str, str | object]:
             event = Event(name=key, date=value)
             events.append(event)
 
-    observer = bristol()
-    reply["sunrise"] = sunrise(observer)
-    reply["sunset"] = sunset(observer)
+    observer = sun.bristol()
+    reply["sunrise"] = sun.sunrise(observer)
+    reply["sunset"] = sun.sunset(observer)
 
     for key, value in xmas_last_posting_dates.items():
         events.append(Event(name=f"xmas_last_{key}", date=value))
diff --git a/agenda/sun.py b/agenda/sun.py
new file mode 100644
index 0000000..72adc69
--- /dev/null
+++ b/agenda/sun.py
@@ -0,0 +1,23 @@
+"""Sunrise and sunset times."""
+
+import typing
+from datetime import datetime
+
+import ephem
+
+
+def bristol() -> ephem.Observer:
+    """Location of Bristol."""
+    observer = ephem.Observer()
+    observer.lat, observer.lon = "51.4545", "-2.5879"
+    return observer
+
+
+def sunrise(observer: ephem.Observer) -> datetime:
+    """Sunrise."""
+    return typing.cast(datetime, observer.next_rising(ephem.Sun(observer)).datetime())
+
+
+def sunset(observer: ephem.Observer) -> datetime:
+    """Sunrise."""
+    return typing.cast(datetime, observer.next_setting(ephem.Sun(observer)).datetime())