TimeZone

is an option for DateObject, DateString, and related functions that specifies the time zone to use for dates and times.

Details

TimeZone->z specifies that results should be returned for a time zone in which z hours must be added to Greenwich Mean Time (GMT) to obtain local time.
TimeZone->"zone" specifies that results should be returned using the appropriate offset for the time zone "zone" on the appropriate date.
The typical default setting is TimeZone:>$TimeZone.
US Eastern Standard Time (EST) corresponds to time zone -5.
For numeric values, daylight saving time corrections must be included in the time zone, so US Eastern Daylight Time (EDT) corresponds to time zone -4.
Example time zone strings include "America/Chicago", "Europe/London", "Asia/Tokyo", and "Zulu".
Settings for TimeZone should be an Integer, Real, or time zone String.
A list of available time zone entities can be found using EntityList["TimeZone"].
DateObject and TimeObject expressions support TimeZone->None.

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Return the current date and time in the GMT time zone:

Return the current date and time in time zones with offsets of 0 to 6 hours:

TimeZone values can be an Integer, Real, or time zone String:

Time zone strings will account for daylight saving time automatically:

EntityList["TimeZone"] can be used to find available "TimeZone" entities:

Find the time zones in the United States:

Plot only the contiguous US:

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