# Graylog exctractor specify timezone other than UTC

**URL:** <https://community.graylog.org/t/graylog-exctractor-specify-timezone-other-than-utc/3663>\
**Category:** Graylog Central (peer support)\
**Created:** [December 30, 2017, 9:40pm UTC](https://community.graylog.org/t/graylog-exctractor-specify-timezone-other-than-utc/3663 "2017-12-30T21:40:44Z")\
**Posts on this page:** 1\
**Showing post:** 13

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**Author:** ![mpolitaev](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/mpolitaev/32/729_2.png) [@mpolitaev](https://community.graylog.org/u/mpolitaev)\
**Post date:** [January 3, 2018, 10:53am UTC](https://community.graylog.org/t/graylog-exctractor-specify-timezone-other-than-utc/3663/13 "2018-01-03T10:53:24Z")

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For check timezone in date in timestamp field i should look into field value, but which function can do this? I found function “has\_field” but it is check only if field present. Filed “timestamp” present for all messages, i need sort those who has format “dd/MMM/yyyy HH:mm:ss” and not change other like “dd/MMM/yyyy HH:mm:ss Z”

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