This Day In History Today in history every day - often with pictures and sound. http://www.historychannel.com/today/
The Calendar Summarizes the history of various calendars developed and used over the centuries. http://www.skeptics.com.au/journal/calendar.htm
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/
Time FAQ Frequently Asked Questions about time (from sci.astro news group) http://www.faqs.org/faqs/astronomy/faq/part3/
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
A Walk Through Time Evolution of timekeeping through the centuries. http://physics.nist.gov/GenInt/Time/time.html
Today'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. http://www.ecben.net/calendar.shtml
Calendar Zone A categorized collection of calendar related sites. http://www.calendarzone.com/
United States Code Weights, measures and standard time. http://tycho.usno.navy.mil/260.html
Time Provides descriptions of several standards of time. http://scienceworld.wolfram.com/astronomy/Time.html
U.S. Time Zones History of standard time in the U.S. http://aa.usno.navy.mil/faq/docs/us_tzones.html
English Calendar Includes an ecclesiastical calendar and a section on old and new style dating. http://www.albion.edu/english/calendar/
Calendar Studies Information about calendar history and calendar reform. http://www.hermetic.ch/cal_stud.htm
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/
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
Infoplease: Daylight Saving Time Information and history about Daylight Saving Time all over the world. http://www.infoplease.com/spot/daylight1.html
Light of Day Shedding light on Queensland's daylight saving opposition. http://www.lightofday.primetap.com
NPR : '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] http://www.npr.org/templates/story/story.php?storyId=4572036
NIST Time and Frequency Division The National Institute of Standards and Technology maintains time and frequency standards for the United States. http://tf.nist.gov/
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