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		The World Meteorological Organization (WMO) has adopted Coordinated Universal Time (abbreviated UTC) as the standard time zone for use in reporting of all meteorological data. Based on the 0° longitude (Greenwich) meridian, it is determined using highly precise atomic clocks. GMT (Greenwich Mean Time) is an obsolete term. For practical purposes it is used today interchangeably with UTC. To convert UTC to     Eastern Standard Time subtract 5 hours     Eastern Daylight Time subtract 4 hours     Atlantic Standard Time subtract 4 hours     Atlantic Daylight Time subtract 3 hours The clocks below, linked to the U.S. Naval Observatory show the actual Eastern and UTC times. Note: These clocks only work in Mozilla browsers. For a clock display supported by MS Internet Explorer click here... Eastern UTC
		Times given in UTC and UT are usually in terms of a 24-hour clock. 13:20 (1320) would be 1:20 p.m. Sometimes a Z (for Zulu) is appended to a time to indicate UT, as in 1320Z. 12/24 hour clock converter: 24 Hour Time 12 Hour Time note: this clock uses your computer's time and constantly updates. It, therefore, may not agree with the clocks above.