Sandburg Center for Sky Awareness
A Fairfax County Public Schools Planetarium

UTC/EST/EDT

The UTC day starts at 00 UTC (midnight), which is 7:00 p.m. EST the previous day, and counts upward to 23:59 hours. To convert from UTC to EST, subtract five hours from UTC (subtract four hours during Daylight Saving Time).

Time Conversion Table (p.m. times appear in boldface type)
UTC 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
EST 07 08 09 10 11 12 01 02 03 04 05 06 07 08 09 10 11 12 01 02 03 04 05 06
EDT 08 09 10 11 12 01 02 03 04 05 06 07 08 09 10 11 12 01 02 03 04 05 06 07

UTC: Universal Time, Coordinated. Also known as Greenwich Mean Time (GMT) or Zulu time (Z).
EST: Eastern Standard Time (Mean Solar Time for the 75°W Standard Time Meridian)
EDT: Eastern Daylight Time. Starting in 2007, daylight time (DT) begins in the United States on the second Sunday in March and ends on the first Sunday in November (formerly from the first Sunday in April to the last Sunday in October).

© Copyright 2003-2008 Walter Sanford. All rights reserved.
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