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Eastern Standard Time

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noun
one of the standard times used in North America, five hours behind Greenwich Mean Time
one of the standard times used in Australia
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Abbreviation: EST
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

How to use Eastern Standard Time in a sentence

Scientific definitions for Eastern Standard Time

Eastern Standard Time

Standard time in the fifth time zone west of Greenwich, England, reckoned at 75° west and used, for example, in the eastern part of North America.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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