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is an option for DateString, AbsoluteTime, and related functions that specifies the time zone to use for dates and times.
  • 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.
  • U.S. Eastern Standard Time (EST) corresponds to time zone .
  • Daylight Saving Time corrections must be included in the time zone, so U.S. Eastern Daylight Time (EDT) corresponds to time zone .
  • Settings for TimeZone need not be integers.
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