Knowledge: time
See Also:
- kids and teens → school time → science → astronomy and space → time
- science → astronomy → amateur → sky calendars
- science → astronomy → calendars and timekeeping
- science → earth sciences → geology → geochronology
- science → physics → relativity → time travel
- society → history → timelines
- society → philosophy → philosophy of science → physics → time and timelessness
Links
- 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.
- This Day In History
http://www.historychannel.com/today/ - Today in history every day - often with pictures and sound.
- The Calendar
http://www.skeptics.com.au/journal/calendar.htm - Summarizes the history of various calendars developed and used over the centuries.
- Atomic Clock Time
http://www.atomictime.net/ - Displayed in a variety of useful formats. Site is a front-end to U.S. government atomic clocks.
- 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.
- A Walk Through Time
http://physics.nist.gov/GenInt/Time/time.html - Evolution of timekeeping through the centuries.
- Today's Calendar and Clock Page
http://www.ecben.net/calendar.shtml - 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.
- Calendar Zone
http://www.calendarzone.com/ - A categorized collection of calendar related sites.
- United States Code
http://tycho.usno.navy.mil/260.html - Weights, measures and standard time.
- Time
http://scienceworld.wolfram.com/astronomy/Time.html - Provides descriptions of several standards of time.
- U.S. Time Zones
http://aa.usno.navy.mil/faq/docs/us_tzones.html - History of standard time in the U.S.
- English Calendar
http://www.albion.edu/english/calendar/ - Includes an ecclesiastical calendar and a section on old and new style dating.
- Calendar Studies
http://www.hermetic.ch/cal_stud.htm - Information about calendar history and calendar reform.
- Time References
http://htexplained.com/watches/TimeRef/ - To set your watch or clock accurately using a time reference. Explains the various options for residents of North America.
- Date Algorithms
http://vsg.cape.com/~pbaum/date/date0.htm - Provides descriptions, proofs and computer programming implementation examples to convert dates to various calendar dates for Julian, Gregorian, and Rata Die calendars.
- A Few Facts Concerning GMT, UT, and the RGO
http://www.apparent-wind.com/gmt-explained.html - Explains the differences between several time systems.
- Infoplease: Daylight Saving Time
http://www.infoplease.com/spot/daylight1.html - Information and history about Daylight Saving Time all over the world.
- Light of Day
http://www.lightofday.primetap.com - Shedding light on Queensland's daylight saving opposition.
- 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]
- 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.
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