UTC+14), but a few are offset by 30 or 45 minutes from a nearby hourly zone.ĭaylight saving time is used in some higher-latitude countries to manipulateĬlock time with respect to the position of the sun for parts of the year, typicallyīy changing clocks by an hour. Of the 40 time zones on land, most are offsetįrom Coordinated Universal Time (UTC) by a whole number of hours (UTC−12 to To keep the same time, so time zones tend to follow the boundaries of countriesĪnd their subdivisions instead. On land, it is more convenient for areas in close commercial or other communication Is split into two 7.5° wide zones (UTC☑2) by the 180th meridian, part of whichĬoincides with the International Date Line. An hourly zone in the central Pacific Ocean Most of theĢ5 nautical time zones (specifically UTC−11 to UTC+11) are indeed defined this west) would be at most 1/24th of the sky. Hour, and the variation in the position of the sun from one end of the zone ![]() The local time in neighboring zones would differ by one Spheroid into 24 lunes (wedge-shaped sections), bordered by meridians each 15° Standard time zones could be defined by geometrically subdividing the Earth's In modern times so similarly situated cities can keep exactly the same time, for Places on the Earth need to have different clock times. To always correspond to the same portion of the day as the Earth rotates (forĮxample, the sun being at its highest point every day around noon), different Time for legal, commercial, and social purposes. ![]() ![]() Untitled Document A time zone is a region on Earth that has a uniform standard
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