Categories

• Alternative Systems(6)
• Clocks and Watches(7)
• Current Time(28)
• Horology(21)
• ISO_8601(47)
• Network_Time_Protocol(16)

Also See

• Calendars and Timekeeping(51)
• Geochronology(11)
• Sky Calendars(13)
• Time(23)
• Timelines(51)
• Time and Timelessness(11)
• Time Travel(16)

Sites

• A Brief History of Time--http://www.perseus.tufts.edu/GreekScience/Students/Chris/TIME2.html
  Early origins and historical perspectives of time measurement.
• A Few Facts Concerning GMT, UT, and the RGO--http://www.apparent-wind.com/gmt-explained.html
  Explains the differences between several time systems.
• A History of Time--http://www-history.mcs.st-andrews.ac.uk/HistTopics/Time_1.html
  Explains the importance of concept of time in the history of mathematics, science and measurement.
• A Walk Through Time--http://physics.nist.gov/GenInt/Time/time.html
  Evolution of timekeeping through the centuries.
• Calendar Studies--http://www.hermetic.ch/cal_stud.htm
  Information about calendar history and calendar reform.
• Calendar Zone--http://www.calendarzone.com/
  A categorized collection of calendar related sites.
• English Calendar--http://www.albion.edu/english/calendar/
  Includes an ecclesiastical calendar and a section on old and new style dating.
• Infoplease: Daylight Saving Time--http://www.infoplease.com/spot/daylight1.html
  Information and history about Daylight Saving Time all over the world.
• International Standard Date and Time Notation--http://www.cl.cam.ac.uk/~mgk25/iso-time.html
  An overview of the ISO 8601 notation for dates.
• Internet Encyclopedia of Philosophy: Time--http://www.iep.utm.edu/t/time.htm
  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.
• NIST Time and Frequency Division--http://tf.nist.gov/
  The National Institute of Standards and Technology maintains time and frequency standards for the United States.
• NPR : 'Seize the Daylight': A History of Clock Chaos--http://www.npr.org/templates/story/story.php?storyId=4572036
  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]
• This Day In History--http://www.history.com/this-day-in-history.do
  Today in history every day - often with pictures and sound.
• Time--http://scienceworld.wolfram.com/astronomy/Time.html
  Provides descriptions of several standards of time.
• Time FAQ--http://www.faqs.org/faqs/astronomy/faq/part3/
  Frequently Asked Questions about time (from sci.astro news group)
• Time Zone and Daylight Saving Time Data--http://www.twinsun.com/tz/tz-link.htm
  A directory of sites providing descriptions of civil timekeeping concepts, source code, databases, and maps.
• U.S. Time Zones--http://aa.usno.navy.mil/faq/docs/us_tzones
  History of standard time in the U.S.
• United States Code--http://tycho.usno.navy.mil/260.html
  Weights, measures and standard time.
• Wikipedia: Time--http://en.wikipedia.org/wiki/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.
• Z-Time--http://www.maybeck.com/ztime/
  Article on the time at 0 degrees longitude. Covers the timezone origin, GMT, UTC, GCT, ZULU and JIG.