Based on moon sighting information for the Seattle area, we have created an electronic calendar for the important Islamic occasions during 2010.  The calendar uses the iCalendar format (ICS) that can be imported into your favorite calendar application (Outlook, iCal, Windows Live Calendar, Google Calendar, etc.).  The calendar can be downloaded from here and imported into your calendar application.  Instructions for importing can be found in the help file or online (for example, for Outlook, refer to http://office.microsoft.com/en-us/outlook/HP030737381033.aspx)