User:Hazelorb/Time zone
From Wikipedia, the free encyclopedia
"Timezone" and "TimeZone" redirect here. For other uses, see Time zone (disambiguation).
This page is about time zones in general. For a list of time zones by country, see List of time zones by country. For more time zone lists, see Lists of time zones.
A time zone is a region on Earth, more or less bounded by lines of longitude, that has a uniform, legally mandated standard time, usually referred to as the local time. By convention, the 24 main time zones on Earth compute their local time as an offset from UTC, which reconciles solar time and atomic time. Time zones proceed eastward from the UTC time zone centered on 0°, increasing by one hour for each 15°, up to the International Date Line at longitude 180°. Time zones have significance in travel, politics, technology, communication and commerce, and are also impacted by astronomy.