Solstices and Seasons
From your About Guide, learn how the earth's tilt gives us our seasons. A Brief Introduction To The Islamic (Hijri) Calendar
A nice overview of the 12 month lunar calendar.
Calendar & Holidays Best of the Net
From Infoplease.com - a vast collection of calendar data for this year and into the future. Includes start times for seasons, world calendars, cultural holidays, and much more. Calendars and Their History
Great in-depth, technical information about various calendar systems. Reprinted from the Explanatory Supplement to the Astronomical Almanac. Calendars Through the Ages
A very impressive site that provides a bounty of information about the history of the calendar, from the history of the week to the month, to several different calendar systems. The Earth Calendar
A vast listing of holidays around the world. Select a date or a specific country for a list. Note that pages annoyingly open in a new window. Frequently Asked Questions
A plethora of answers to frequently asked questions about calendars, seasons, time, and more from the U.S. Naval Observatory. Jewish Calendar
Good background information. The Julian and the Gregorian Calendars
From Peter Meyer, a very thorough overview of the Julian and Gregorian calendars.
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