About Sun calendar
Contains a lot of information about the Sun: sunrise, sunset, solstices, equinoxes, perihelion (Sun closest to Earth) and aphelion (Sun furthest away from Earth).

This calendar will update automatically. You will Not need to resubscribe. Just make sure your calendar application updates the subscriptions weekly (please do not set it to update more often than this).

This calendar contains the data for London, UK. For any other location, please visit webcal.fi/en/ and customize your Sun calendar. Any location will work as long as you know its latitude and longitude.

Please send feedback if you encounter any problems.

Read more: http://www.apple.com/downloads/macosx/calendars/suncalendar.html