Standard time

Standard time is the result of synchronizing clocks in different geographical locations within a time zone to the same time rather than using the local meridian as in local mean time or solar time. The time so set has come to be defined in terms of offsets from Universal Time. (See more about standard time.)

Where daylight saving time is used, standard time may refer to the time without daylight saving time.

History of Standard Time

Great Britain

Standard time was first used by British railways on December 11, 1847, when they switched from local mean time to GMT. The vast majority of Great Britain's public clocks were being synchronized using GMT by 1855.

North America

Prior to the 1883, local mean time was used throughout North America, resulting in an inordinate number of local times. This caused convoluted regional and national train schedules. Sandford Fleming, a Canadian, proposed Standard Time at a Meeting of the Royal Canadian Institute on 1879 February 8. The heads of the major railroads met in Chicago to adopt the Standard Time System. The new system was adopted by most states almost immediately after railroads did so and finally officially adopted by the U.S. government almost fifty years later.

See also

• Solar time
• Time zone
• Universal Time

Further reading

• Ian R. Bartky (1989-01). "The adoption of standard time". Technology and Culture. 30 (1): 25–56. {{cite journal}}: Check date values in: |date= (help)
• Eviatar Zerubavel (1982-07). "The standardization of time: a sociohistorical perspective". The American Journal of Sociology. 88 (1): 1–23. {{cite journal}}: Check date values in: |date= (help)