![]() Coordinated Universal Time ( q.v.), the international basis of civil and scientific time, is obtained from an atomic clock that is adjusted in epoch so as to remain close to UT1 in this way, the solar time that is indicated by Universal Time is kept in close coordination with atomic time. Finally, an empirical correction to take account of annual changes in the Earth’s speed of rotation is added to UT1 to convert it into UT2. UT1, which gives the precise angular coordinate of the Earth about its spin axis, is obtained by correcting UT0 for the effects of polar motion. These values differ slightly from each other because of the effects of polar motion ( q.v.). UT0 represents the initial values of Universal Time obtained by optical observations of star transits at various astronomical observatories. In 1955 the International Astronomical Union defined several categories of Universal Time of successively increasing accuracy. Universal Time replaced the designation Greenwich Mean Time in 1928 it is now used to denote the solar time ( q.v.) when an accuracy of about one second suffices. Universal Time (UT), the mean solar time of the Greenwich meridian (0° longitude). Eastern Standard Time (EST) is UTC-5:00, and Eastern Daylight Time (EDT). SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space! Time conversion from Eastern Standard Time (-5) to Central Standard Time(-6). ![]() Learn about the major environmental problems facing our planet and what can be done about them! Central Standard Time Sunday Mar, 19, 2023 07:19 PM 12 1 2 3 4 5 6 7 8 9 10 11 Central Standard Time (CST) CST is 6 hours behind Universal Time.
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