Alternative Systems 5
Clocks and Watches 7
Current Time 31
Horology 23
ISO 8601 47
Network Time Protocol 22
| | Time - Astronomy and Space, Science, School Time, Kids and Teens 25
Sky Calendars - Amateur, Astronomy, Science 15
Calendars and Timekeeping - Astronomy, Science 54
Geochronology - Geology, Earth Sciences, Science 13
Time Travel - Relativity, Physics, Science 16
Timelines - History, Society 63
Time and Timelessness - Physics, Philosophy of Science, Philosophy, Society 13
 A Brief History of TimeA Brief History of Time
 Early origins and historical perspectives of time measurement.
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The CalendarThe Calendar
 Summarizes the history of various calendars developed and used over the centuries.
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Calendar StudiesCalendar Studies
 Information about calendar history and calendar reform.
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Calendar ZoneCalendar Zone
 A categorized collection of calendar related sites.
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English CalendarEnglish Calendar
 Includes an ecclesiastical calendar and a section on old and new style dating.
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A Few Facts Concerning GMT, UT, and the RGOA Few Facts Concerning GMT, UT, and the RGO
 Explains the differences between several time systems.
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A History of TimeA History of Time
 Explains the importance of concept of time in the history of mathematics, science and measurement.
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Infoplease: Daylight Saving TimeInfoplease: Daylight Saving Time
 Information and history about Daylight Saving Time all over the world.
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International Standard Date and Time NotationInternational Standard Date and Time Notation
 An overview of the ISO 8601 notation for dates.
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Internet Encyclopedia of Philosophy: TimeInternet Encyclopedia of Philosophy: Time
 Time has been studied for thousands of years. Nevertheless, many issues remain to be resolved. This article explores both what is now known about time and what is controversial and unresolved.
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NIST Time and Frequency DivisionNIST Time and Frequency Division
 The National Institute of Standards and Technology maintains time and frequency standards for the United States.
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NPR : 'Seize the Daylight': A History of Clock ChaosNPR : 'Seize the Daylight': A History of Clock Chaos
 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" Author David Prerau talks about the complicated politics and curious history of DST, and he shares an excerpt from his book. [4:54 streaming audio broadcast]
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This Day In HistoryThis Day In History
 Today in history every day - often with pictures and sound.
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TimeTime
 Provides descriptions of several standards of time.
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Time FAQTime FAQ
 Frequently Asked Questions about time (from sci.astro news group)
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Time Zone and Daylight Saving Time DataTime Zone and Daylight Saving Time Data
 A directory of sites providing descriptions of civil timekeeping concepts, source code, databases, and maps.
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Today's Calendar and Clock PageToday's Calendar and Clock Page
 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.
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United States CodeUnited States Code
 Weights, measures and standard time.
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U.S. Time ZonesU.S. Time Zones
 History of standard time in the U.S.
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A Walk Through TimeA Walk Through Time
 Evolution of timekeeping through the centuries.
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Wikipedia: TimeWikipedia: Time
 Time is a common term for the experience of duration, and a fundamental quantity of measuring systems. Article explains time definitions, history of measurements, perceptions in religion, philosophy and science.
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Z-TimeZ-Time
 Article on the time at 0 degrees longitude. Covers the timezone origin, GMT, UTC, GCT, ZULU and JIG.
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