Some of zone records use 3 or 4 letter abbreviations that are tied to physical time zones, others use numeric UTC offsets. Time zone abbreviations for both Standard Time and Daylight Saving Time are shown exactly as they appear in the database. The easiest way to convert a time to UTC is to call the static ( Shared in Visual Basic) TimeZoneInfo.ConvertTimeToUtc (DateTime) method. The Eastern Time Zone (ET) is an area 5 hours behind Greenwich Mean Time (GMT-5) during the winter months (referred to as Eastern Standard Time or EST) and 4. Greenwich Mean Time is 5 hours ahead of Central Time (CT). For an explanation on what UTC+ and UTC- mean, please see the UTC page. How to Convert GMT to Other Time Zones Greenwich Mean Time is 4 hours ahead of Eastern Time (ET). This table does not attempt to document any of the historical data which resides in the database. Note: the time zones listed on this page are listed in Coordinated Universal Time (UTC) as well as the names of the time zones as they are called within the United States. The UTC offsets are based on the current or upcoming database rules. Standard Time ( STD) and Daylight Saving Time ( DST) offsets from UTC in hours and minutes.įor zones in which Daylight Saving is not observed, the DST offset shown in this table is a simple duplication of the STD offset. Eastern Daylight Time is 4 hours behind UTC. UTC is precisely the same imaginary line defined by GMT at the Prime Meridian. Historical data for such zones is still preserved in the source code, but it is not included when compiling the database with standard options. Eastern Standard Time is 5 hours behind Coordinated Universal Time (UTC). With the rotation of the Earth, from east to west, each meridian. The dagger symbol (†) signifies that the zone was canonical in a previous version of the database. Link - An alternative name (alias) which links to a canonical zone.Time difference between Eastern Standard Time (EST). Canonical - The primary, preferred zone name. Eastern Standard Time (EST) is a UTC -05:00 timezone offset where as GMT is a UTC 0:0 timezone offset. This is a list of time zones from release 2023c of the tz database. World map showing time zones from the tz database version 2017a
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