Calendars Through the Ages
Provides history of calendars, from ancient Rome to outer space. Explanations on how the week and year came to be. There also various calendars from different cultures including Chinese, Christian, Indian, Islamic, Jewish, etc.
http://www.webexhibits.org/calendars/index.html
CalendarHome.com
Anything and everything about calendar on the Internet. Users can print photo calendars, customize own calendars with own events, convert calendars, and has printable perpetual calendar charts.
http://calendarhome.com/
VPCalendar.net
"Learn more about holiday dates, days between dates, historical calendars, and future calendars. See what day of the week your birthday will be on as far out as 50 years from now. Also find many time management tips and so much more."
http://vpcalendar.net/
