Wolfram Language & System 11.0 (2016)|Legacy Documentation

This is documentation for an earlier version of the Wolfram Language.View current documentation (Version 11.2)


is an option for DateObject, DateString, 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.
  • 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"].
Introduced in 1991
| Updated in 2015