Home :: Astronomy :: Calendars and Timekeeping

Maya Calendar 2000
The calendar was the center of Maya life and their greatest cultural achievement. To carry out their astronomical calculations they developed a sophisticated mathematical system. The Maya Calendar website is developing with the intent of providing a complete view of Maya culture.
http://mayacalendar.com

The Dutch Sundial Society
Information is mostly in Dutch, but with some English language pages, including how to calculate several types of sundia l.
http://home.iae.nl/users/ferdv/

The North American Sundial Society
Includes general information, links, a register of dials in North America, and a message board.
http://sundials.org/

Annus Novus Decimal Calendar
A proposal for a non-sectarian, culturally neutral calendar system.
http://www.atlantium.org/calendaran.html