Time zones

Source: Wikipedia. Pages: 70. Chapters: Time zone, Greenwich Mean Time, Prime Meridian, Western European Summer Time, List of tz database time zones, List of time zones by UTC offset, Railway time, List of time zones by country, Effects of time on North American broadcasting, International Date Line, Eastern Time Zone, Central European Time, British Summer Time, Central Time Zone, Eastern European Time, Mountain Time Zone, Indian Standard Time, List of U.S. states by time zone, List of time zone abbreviations, Pacific Time Zone, Hong Kong Time, Alaska Time Zone, Japan Standard Time, Nautical time, Western European Time, Newfoundland Standard Time Zone, Central European Summer Time, Mecca Time, Moscow Time, Omsk Time, Atlantic Standard Time Zone, ASEAN Common Time, Decree time, South African Standard Time, Eastern European Summer Time, List of military time zones, Israel Standard Time, Chamorro Time Zone, Bombay time, Bangladesh Standard Time, Singapore Standard Time, Samara Time, Sandringham time, Hawaii-Aleutian Time Zone, Krasnoyarsk Time, West Africa Time, Kamchatka Time, Anglo-French Conference on Time-keeping at Sea, Yukon Standard Time Zone, Korea Standard Time, Iran Standard Time, Sri Lanka Time, Samoa Time Zone, Bangladesh Daylight saving time, East Africa Time, Vladivostok Time, Wake Island Time Zone, Magadan Time, Yekaterinburg Time, Central Africa Time, Calcutta time, Central European Midsummer Time, Uzbekistan Time, Port Blair mean time, Yakutsk Time, Madras time, Chatham Standard Time Zone, Mauritius Time, Irkutsk Time, Egypt Standard Time, Kaliningrad Time, Lists of time zones, Nepal Time, Cape Verde Time, Armenia Time, Seychelles Time, Bhutan Time, Irish Standard Time, Continental time, Time zones of Europe, Bering Standard Time, Galápagos Time, Azerbaijan Time. Excerpt: This is a list of tz database time zones derived from the file zone.tab from the 2010e edition of the database. That table has the following four columns, which are mapped into columns 2 - 5 in the list shown below: Not present is the prescription of start and stop of a DST, and historical changes of such a prescription. The table is sorted first by country, then an order within the country that (1) makes some geographical sense, and (2) puts the most populous zones first, where that does not contradict (1). Columns marked with * contain the official data from the file zone.tab version 8.33 in tzdata2010e.tar.gz taken from ftp://elsie.nci.nih.gov/pub/. A time zone is a region on Earth that has a uniform, legally mandated standard time. Almost all time zones on land have legally defined borders which coincide with the borders of the country mandating the time or some subdivision thereof. Of the 40 time zones on land, most are offset from Coordinated Universal Time (UTC) by a whole number of hours (UTC-12 to UTC+14), but a few are offset by 30 or 45 minutes from a nearby hourly zone. In addition to land time zones, there are 25 nautical time zones, all separated by lines of longitude. Most (UTC-11 to UTC+11) are 15° of longitude wide, which is one hour of Earth's rotation relative to the Sun, but an hourly zone in the central Pacific Ocean is split into two 7.5° wide zones (UTC±12) by the 180th meridian, part of which coincides with the International Date Line. Many land time zones are skewed toward the west relative to the corresponding nautical time zones. Before 1972, all time zones were specified as an offset from Greenwich Mean Ti...