- Calendars Through the Ages
Illustrated history and FAQs for calendars around the world, including the Julian, Gregorian, Jewish, Islamic, Chinese, and Mayan versions.
www.webexhibits.org/calendars
- Internet Public Library: Calendars
Offers links to topical and audience-specific calendars, including religious and cultural calendars.
www.ipl.org/div/subject/browse/ref20.00.00
- WikiProject Calendars
User-created calendars showing dates and holidays worldwide, from Wikipedia. Includes Gregorian, Chinese, and Islamic calendar dates.
en.wikipedia.org/wiki/Wikipedia:WikiProject_Calendars
- Wong Kar-Wai Calendar Project
[read review]
Collection of monthly calendars (in print or desktop wallpaper form) inspired by the Hong Kong filmmaker.
www.lossless.net/projects/wkw-calendar
- Calendars, Interpolation, Gnomons, and Armillary Spheres in the Work of Guo Shoujing (1231-1314)
(PDF)
Research paper which traces the usage of zodiacal spheres and other instruments by Chinese astronomers. In PDF format.
www.math.nus.edu.sg/aslaksen/projects/nst-urops.pdf
- Brief History of the Calendar, A
Learn about the origins and evolution of the calendar, including how different cultures and eras have reconciled the lunar and solar cycles when measuring time.
www.obliquity.com/calendar
- World Book Encyclopedia: Calendars
Facts about calendars and their long history. Includes information about the Chinese, Islamic, Hebrew, and Christian church calendars, as well as early versions created by the Babylonians and Egyptians.
www.worldbookonline.com/wb/Article?id=ar087720&st=Calendars
- Date Calculator Page
Calculates the number of days between two dates, or find out what the date will be a given number of days from now.
www.cs.duke.edu/datecalc
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