Computation of Sunrise, Sunset and Twilight Times Calculates the length of daylight for your particular location, when twilight begins and ends, sunrise and sunset times, the height angle of the sun at noon and the declination.
The 10,000 Year CalendarA perpetual calendar; may check days of the week for dates in history and in the future. Printable calendars to use, too.
Virtual Perpetual CalendarsProvides the calendar for any year in the 19th-21st centuries. Dates for holidays in the United States and Canada from 1995-2010 may also be checked.
