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Standard Time
Introduction References & Edit History Related Topics
Images & Videos
World map showing standard time zones, with each zone shaded and labeled by its offset from Greenwich Mean Time. The International Date Line is marked with a bold, zigzagging line in the Pacific Ocean, and variations for half-hour and other non-standard offsets are indicated. Continents, major countries, and oceans are labeled for reference.
Daylight Saving Time?

Standard Time: References & Edit History

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  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

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Article History

Type Description Contributor Date
Media added. Nov 02, 2023
Revised and updated map of world time zones added. Apr 11, 2012
Add new Web site: Fact Monster - Science - Standard Time. Feb 10, 2011
Added map of world time zones. Jun 30, 2010
Article revised. Mar 10, 2005
Article added to new online database. Jul 20, 1998
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