| standard time n. The time in any of 24 time zones, usually the mean solar time at the central meridian of each zone. In the continental United States, there are four standard time zones: Eastern, using the 75th meridian; Central, using the 90th meridian; Mountain, using the 105th meridian; and Pacific, using the 120th meridian. |
standard time
Noun
the official local time of a region or country determined by the distance from Greenwich of a line of longitude passing through the area
| standard time The time in any of the 24 time zones into which the Earth's surface is divided, usually the mean time at the central meridian of the given zone. There are four standard time zones in the contiguous continental United States: Eastern, using the 75th meridian; Central, using the 90th meridian; Mountain, using the 105th meridian; and Pacific, using the 120th meridian. Alaska Standard Time, centered on the 135th meridian, is one hour behind Pacific time, and Hawaii Standard Time, centered on the 150th meridian, is one hour behind Alaska time. See more at daylight-saving timetime zone |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  standard time - the official time in a local region (adjusted for location around the Earth); established by law or customtime - the continuum of experience in which events pass from the future through the present to the past Atlantic Standard Time, Atlantic Time - standard time in the 4th time zone west of Greenwich, reckoned at the 60th meridian; used in Puerto Rico and the Virgin Islands and Bermuda and the Canadian Maritime Provinces Eastern Standard Time, Eastern Time, EST - standard time in the 5th time zone west of Greenwich, reckoned at the 75th meridian; used in the eastern United States Central Standard Time, Central Time, CST - standard time in the 6th time zone west of Greenwich, reckoned at the 90th meridian; used in the central United States Mountain Standard Time, Mountain Time, MST - standard time in the 7th time zone west of Greenwich, reckoned at the 105th meridian west; used in the mountain states of the United States Pacific Standard Time, Pacific Time, PST - standard time in the 8th time zone west of Greenwich, reckoned at the 120th meridian west; used in far western states of the United States Alaska Standard Time, Yukon Time - standard time in the 9th time zone west of Greenwich, reckoned at the 135th meridian west; used in Hawaii and most of Alaska Hawaii Standard Time, Hawaii Time - standard time in the 10th time zone west of Greenwich, reckoned at the 150th meridian west; used in Hawaii and the western Aleutian Islands Bering Standard Time, Bering Time - standard time in the 11th time zone west of Greenwich, reckoned at the 165th meridian west; used in the Midway Islands |
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