 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. |
 Time - http://scienceworld.wolfram.com/astronomy/Time.html Provides descriptions of several standards of time. |
 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. |
 Infoplease: Daylight Saving Time - http://www.infoplease.com/spot/daylight1.html Information and history about Daylight Saving Time all over the world. |
 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. |
 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] |
 Calendar Zone - http://www.calendarzone.com/ A categorized collection of calendar related sites. |
 A Brief History of Time - http://www.perseus.tufts.edu/GreekScience/Students/Chris/TIME2.html Early origins and historical perspectives of time measurement. |
 English Calendar - http://www.albion.edu/english/calendar/ Includes an ecclesiastical calendar and a section on old and new style dating. |
 Time FAQ - http://www.faqs.org/faqs/astronomy/faq/part3/ Frequently Asked Questions about time (from sci.astro news group) |
 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. |
 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. |
 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. |
 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. |
 Calendar Studies - http://www.hermetic.ch/cal_stud.htm Information about calendar history and calendar reform. |
 This Day In History - http://www.history.com/this-day-in-history.do Today in history every day - often with pictures and sound. |
 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. |
 A Walk Through Time - http://physics.nist.gov/GenInt/Time/time.html Evolution of timekeeping through the centuries. |