Reference, Time

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- Information on all things relating to calendars, dates, holidays, and time. Find today's date on several different cultural and religious calendars. Includes section on Celestial data, countdown clocks, and information on the dates past events.

- A categorized collection of calendar related sites.
- Displayed in a variety of useful formats. Site is a front-end to U.S. government atomic clocks.
- History of standard time in the U.S.
- Today in history every day - often with pictures and sound.
- The National Institute of Standards and Technology maintains time and frequency standards for the United States.
- Provides descriptions of several standards of time.
- Weights, measures and standard time.
- The history of the western calendar and the clock.
- To set your watch or clock accurately using a time reference. Explains the various options for residents of North America.
- Summarizes the history of various calendars developed and used over the centuries.
- Shedding light on Queensland's daylight saving opposition.
- Evolution of timekeeping through the centuries.
- Provides descriptions, proofs and computer programming implementation examples to convert dates to various calendar dates for Julian, Gregorian, and Rata Die calendars.
- A directory of sites providing descriptions of civil timekeeping concepts, source code, databases, and maps.
- Information about calendar history and calendar reform.
- Information and history about Daylight Saving Time all over the world.
- Benjamin Franklin first called for the government to tinker with clock hours in the 1780s. But it wasn't until World War I that the United States adopted daylight-saving time as a way to get more efficiency out of the day. "Seize the Daylight"
- An overview of the ISO 8601 notation for dates.
- Explains the differences between several time systems.
- Frequently Asked Questions about time (from sci.astro news group)
- Includes an ecclesiastical calendar and a section on old and new style dating.

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