Add sunrise and sunset

Closes: #39

agenda/__init__.py

@@ -13,6 +13,7 @@ from typing import List
 import dateutil
 import dateutil.parser
 import dateutil.tz
+import ephem
 import exchange_calendars
 import holidays
 import lxml
@@ -593,6 +594,22 @@ def waste_collection_events() -> list[Event]:
     return events
 
 
+def bristol():
+    observer = ephem.Observer()
+    observer.lat, observer.lon = "51.4545", "-2.5879"
+    return observer
+
+
+def sunrise(observer):
+    """Sunrise."""
+    return observer.next_rising(ephem.Sun(observer)).datetime()
+
+
+def sunset(observer):
+    """Sunrise."""
+    return observer.next_setting(ephem.Sun(observer)).datetime()
+
+
 def get_data(now: datetime) -> typing.Mapping[str, str | object]:
     """Get data to display on agenda dashboard."""
     rocket_dir = os.path.join(data_dir, "thespacedevs")
@@ -634,6 +651,10 @@ 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)
+
     for key, value in xmas_last_posting_dates.items():
         events.append(Event(name=f"xmas_last_{key}", date=value))
 

templates/index.html

@@ -55,6 +55,8 @@
         unknown
       {% endif %}
     </li>
+    <li>Sunrise: {{ sunrise.strftime("%H:%M:%S") }} /
+    Sunset: {{ sunset.strftime("%H:%M:%S") }}</li>
     </ul>
 
   <table class="table table-hover w-auto">