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utc−10:00 When dst is NOT set to "no", the *T, *ST and *DT variants of a particular time zone will produce the same output and can be used interchangeably. Otherwise (when using dst=no ), *T and *ST will produce the offset without DST adjustment, and *DT will produce the offset with DST adjustment.
UTC−06:00 CT or CST: CDT: Central Standard/Daylight Time UTC−06:00 UTC−05:00 ET or EST: EDT: Eastern Standard/Daylight Time UTC−05:00 UTC−04:00 AT or AST: ADT: Atlantic Standard/Daylight Time UTC−04:00 UTC−03:00 NT or NST: NDT: Newfoundland Standard/Daylight Time UTC−03:30 UTC−02:30 GMT: BST: Greenwich Mean Time / British ...
Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+08:00), Cuba Standard Time (UTC−05:00), and (North American) Central Standard Time (UTC−06:00), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in ...
The North American Central Time Zone (CT) is a time zone in parts of Canada, the United States, Mexico, Central America, and a few Caribbean islands. [1]In parts of that zone (20 states in the US, three provinces or territories in Canada, and several border municipalities in Mexico), the Central Time Zone is affected by two time designations yearly: Central Standard Time (CST) is observed from ...
Information on daylight saving time or historical changes in offsets can be found in the individual offset articles (e.g. UTC+01:00) or the country-specific time articles (e.g. Time in Russia). Places that observe daylight saving time (DST) during their respective summer periods are listed only once, at the offset for their winter (usually ...
Time zones of the world. A time zone is an area which observes a uniform standard time for legal, commercial and social purposes. Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude, because it is convenient for areas in frequent communication to keep the same time.
For example, 6:00 a.m. in zone UTC−5 is written "0600R" and spoken "zero six hundred Romeo". The numeric zone description or "plus and minus system" indicates the correction which must be applied to the time as expressed in order to convert to UTC.
ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data.It is maintained by the International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. [1]