# Standing Reservations clarification please

**URL:** <https://community.openpbs.org/t/standing-reservations-clarification-please/2278>\
**Category:** Users/Site Administrators\
**Created:** [September 16, 2020, 11:26pm UTC](https://community.openpbs.org/t/standing-reservations-clarification-please/2278 "2020-09-16T23:26:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![datakid](https://avatars.discourse-cdn.com/v4/letter/d/db5fbb/32.png) [@datakid](https://community.openpbs.org/u/datakid)\
**Post date:** [September 16, 2020, 11:26pm UTC](https://community.openpbs.org/t/standing-reservations-clarification-please/2278/1 "2020-09-16T23:26:21Z")

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The documentation, section **7.3.3.2 Requirements for Creating Standing Reservations** (UG-139, or page 1685 of the big book), states that

```auto
You must set the submission host’s PBS_TZID environment variable. The format for PBS_TZID 
is a timezone location. Example: America/Los_Angeles, America/Detroit, Europe/Berlin, 
Asia/Calcutta. See section 1.4.5, “Setting Time Zone for Submission Host”, on page 10.

```

Does this mean that PBS doesn’t honour the timezone setting in the OS itself?

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<div class="post-metadata">

**Author:** ![datakid](https://avatars.discourse-cdn.com/v4/letter/d/db5fbb/32.png) [@datakid](https://community.openpbs.org/u/datakid)\
**Post date:** [September 17, 2020, 12:05am UTC](https://community.openpbs.org/t/standing-reservations-clarification-please/2278/2 "2020-09-17T00:05:41Z")

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It’s true - if you try to set a standing reservation without a TZ it throws the `pbs_rsub error: a valid PBS_TZID timezone environment variable is required.` error!

What’s the reasoning behind not honouring the OS timezone?