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When Do You Want To Go Today? 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. http://www.ecben.net/calendar.shtml
A Walk Through Time Evolution of timekeeping through the centuries. http://physics.nist.gov/GenInt/Time/time.html
Atomic Clock Time Displayed in a variety of useful formats. Site is a front-end to U.S. government atomic clocks. http://www.atomictime.net/
Calendar Studies Information about calendar history and calendar reform. http://www.hermetic.ch/cal_stud.htm
Calendar Zone A categorized collection of calendar related sites. http://www.calendarzone.com/
Calendar: A History The history of the western calendar and the clock. http://www.ernie.cummings.net/calendar.htm
Date Algorithms Provides descriptions, proofs and computer programming implementation examples to convert dates to various calendar dates for Julian, Gregorian, and Rata Die calendars. http://vsg.cape.com/~pbaum/date/date0.htm
English Calendar Includes an ecclesiastical calendar and a section on old and new style dating. http://www.albion.edu/english/calendar/
International Standard Date and Time Notation An overview of the ISO 8601 notation for dates. http://www.cl.cam.ac.uk/~mgk25/iso-time.html
NIST Time and Frequency Division The National Institute of Standards and Technology maintains time and frequency standards for the United States. http://www.boulder.nist.gov/timefreq/
The Calendar Summarizes the history of various calendars developed and used over the centuries. http://www.skeptics.com.au/journal/calendar.htm
This Day In History Today in history every day - often with pictures and sound. http://www.HistoryChannel.com/today/
Time Provides descriptions of several standards of time. http://scienceworld.wolfram.com/astronomy/Time.html
Time FAQ Frequently Asked Questions about time (from sci.astro news group) http://www.faqs.org/faqs/astronomy/faq/part3/
Time References To set your watch or clock accurately using a time reference. Explains the various options for residents of North America. http://htexplained.com/watches/TimeRef/
Time Zone and Daylight Saving Time Data A directory of sites providing descriptions of civil timekeeping concepts, source code, databases, and maps. http://www.twinsun.com/tz/tz-link.htm
U.S. Time Zones History of standard time in the U.S. http://aa.usno.navy.mil/faq/docs/us_tzones.html
United States Code Weights, measures and standard time. http://tycho.usno.navy.mil/260.html
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