Standard Calendars

• 2009 Calendar - Illustrated calendar from Infoplease, listing holidays for each month.

• 2010 Calendar - From Infoplease.

• Infoplease Perpetual Calendar - Find the day a date lands on in 2058 or any year of your choice; essentially a calendar for every year frontward and backward.

• 3-D Calendars - From Cleave books; downloadable calendars that you can fold and put on your desk.

• Holiday Calculator - Scroll down and choose options in the large box; find the day and date on which a holiday lands in any year.

Ancient Calendars

• Calendars of Various Cultures - Page on Babylonian, Jewish, Muslim and other calendars; rich with mathematical info and detailed explanations.

• A Walk Through Time - National Institute of Standards and Technology page on the history of calendars.

• The Moon and Ancient Calendars - Very complete analysis from author Robin Heath.

• Calendars of the Ages - A selection of information on Egyptian, Chinese, Mayan, and other calendars.

Other Calendars

• Mathematics of the Chinese Calendar - Detailed explanation of the mathematics as well as a resources list.

• Aztec Calendar - Functioning Aztec calendar (tonalpohuall) with a converter from the standard (Gregorian) calendar, and links to historical info.

Specialty/Alternative Calendars

• Interfaith Calendar - Lists holidays in many world religions; searchable by religion or by year.

• Calendar Reform - Eastern Carolina University Professor's page; an exhaustive list of proposed calendars meant to serve as alternatives to the Gregorian calendar.

• The World Calendar - Home page for one of the most prominent proposed alternative calendars.