Also included is the formula for determining for figuring out the day of the week for any date. Perpetual Calendar This site calculates the day of the week for any date from January 1, 1 B.C. Local Times Around the World This site attempts to list all of the countries of the world with their local times. This site offers links to information about timepieces of all kinds, repair and restoration, collecting, and more. Horology - The Index Horology is the science of measuring time and the art of making timepieces. National Association of Watch & Clock Collectors Museum The Watch and Clock Museum houses over 13,000 timekeepers and ephemera from around the world. The History of Timekeeping A history of timekeeping from using the sun to the development of atomic clocks.
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1 second.ĭoomsday Algorithm This site explains the formula for calculating the day of the week of a given date.Ī Brief History of Timekeeping An article by Helen Margolis from Physics World.Ī Chronicle of Timekeeping An article by William J.H. Naval Observatory) These two agencies contribute to world time, or Coordinated Universal Time (UTC), for the U.S. Time ( National Institute of Standards and Technology and the U.S. A world without time: the forgotten legacy of Godel and Einstein. Berkeley, Calif.: University of California Press, 1986. The railway journey: the industrialization of time and space in the 19th century. of Commerce, Technology Administration, National Institute of Standards and Technology, 1999. From sundials to atomic clocks: understanding time and frequency. Red, white, and blue letter days: an American calendar. Stanford, Calif.: Stanford University Press, c2000. Selling the true time: nineteenth-century timekeeping in America. Stanford, Calif.: Stanford University Press, 2007. One time fits all: the campaigns for global uniformity.
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: National Institute of Standards and Technology, 1992. A Walk through time: a journey offered to you.The Gregorian calendar compared with the French revolutionary calendar, adopted by the National Assembly and printed in full in Le Moniteur universel of "Octidi, 28 Frimaire, I'an 2e", "Wednesday, December 18, 1793, old style".: comprising a calendar for the year astronomical information miscellaneous directions, hints, and remarks and statistical and other particulars respecting foreign countries and the United States. The American almanac and repository of useful knowledge for the year.Additional titles can be identified by searching ALIC's Online Public Access Catalog. The following is a list of published works on timekeeping and calendars in ALIC's collections. Time Links to information about time, clocks and calendars.