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$SystemTimeZone

gives the current time zone for the computer system on which the Wolfram System is being run.

Details
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Examples  
Basic Examples  
Properties & Relations  
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$SystemTimeZone

$SystemTimeZone

gives the current time zone for the computer system on which the Wolfram System is being run.

Details

  • The time zone gives the number of hours that must be added to Greenwich Mean Time (GMT) to obtain local time.
  • $SystemTimeZone is set at the beginning of your Wolfram System session to the time zone specified by the computer system on which it is running.
  • The Wolfram System assumes that the time returned by the system clock on your computer system is for the time zone corresponding to $SystemTimeZone.

Examples

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Basic Examples  (1)

Show the number of hours that must be added to GMT to obtain local time:

Wolfram Language code: $SystemTimeZone

Properties & Relations  (2)

The value of $TimeZone is initialized to $SystemTimeZone when the kernel launches:

Wolfram Language code: $TimeZone == $SystemTimeZone

$TimeZone can have its value reset, but $SystemTimeZone is Protected:

Wolfram Language code: $TimeZone = "America/Chicago"
Wolfram Language code: DateObject[]
Wolfram Language code: $SystemTimeZone = "Europe/London"
Wolfram Language code: Attributes[$SystemTimeZone]
Wolfram Research (2015), $SystemTimeZone, Wolfram Language function, https://reference.wolfram.com/language/ref/$SystemTimeZone.html.

Text

Wolfram Research (2015), $SystemTimeZone, Wolfram Language function, https://reference.wolfram.com/language/ref/$SystemTimeZone.html.

CMS

Wolfram Language. 2015. "$SystemTimeZone." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/$SystemTimeZone.html.

APA

Wolfram Language. (2015). $SystemTimeZone. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/$SystemTimeZone.html

BibTeX

@misc{reference.wolfram_2026_$systemtimezone, author="Wolfram Research", title="{$SystemTimeZone}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/$SystemTimeZone.html}", note=[Accessed: 16-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_$systemtimezone, organization={Wolfram Research}, title={$SystemTimeZone}, year={2015}, url={https://reference.wolfram.com/language/ref/$SystemTimeZone.html}, note=[Accessed: 16-June-2026]}