# Logstash filter date match not replacing @timestamp

**URL:** <https://discuss.elastic.co/t/logstash-filter-date-match-not-replacing-timestamp/306364>\
**Category:** Logstash\
**Created:** [June 3, 2022, 8:17pm UTC](https://discuss.elastic.co/t/logstash-filter-date-match-not-replacing-timestamp/306364 "2022-06-03T20:17:25Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [June 6, 2022, 7:25pm UTC](https://discuss.elastic.co/t/logstash-filter-date-match-not-replacing-timestamp/306364/14 "2022-06-06T19:25:40Z")

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You didn't answer my question about the locale.

Can you see if `mutate { gsub => ["datetime", "Dec", "Dec."] }` before the date filter helps? I am reminded of [this](https://discuss.elastic.co/t/syslog-output-date-format/264366/5) thread.

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