This is a Sakai OAE Widget which shows iCalendar (webcal://) feeds. It should live in a directory called calendarfeed/ under devwidgets/ in your 3akai-ux/ directory (assuming you want to install it, ...

Display sunset and sunrise times as all day events from an iCalendar feed in Google Calendar, your phone or elsewhere. http://sun.is.permanent.ee/?latitude=59. ...