|A Few Facts Concerning GMT, UT, and the RGO|
Explains the differences between several time systems.
|A Walk Through Time|
Evolution of timekeeping through the centuries.
|Atomic Clock Time|
Displayed in a variety of useful formats. site is a front-end to u. s. government atomic clocks.
Information about calendar history and calendar reform.
A categorized collection of calendar related sites.
Provides descriptions , proofs and computer programming implementation examples to convert dates to various calendar dates for julian , gregorian , and rata die calendars.
Includes an ecclesiastical calendar and a section on old and new style dating.
|Infoplease: Daylight Saving Time|
Information and history about daylight saving time all over the world.
|International Standard Date and Time Notation|
An overview of the iso 8601 notation for dates.
|Light of Day|
Shedding light on queensland's daylight saving opposition.
|NIST Time and Frequency Division|
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|
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"
Summarizes the history of various calendars developed and used over the centuries.
|This Day In History|
Today in history every day - often with pictures and sound.
Provides descriptions of several standards of time.