# What is the date format to be used with Logstash to match 9 digits millisecond

**URL:** <https://discuss.elastic.co/t/what-is-the-date-format-to-be-used-with-logstash-to-match-9-digits-millisecond/107032>\
**Category:** Logstash\
**Created:** [November 9, 2017, 11:29am UTC](https://discuss.elastic.co/t/what-is-the-date-format-to-be-used-with-logstash-to-match-9-digits-millisecond/107032 "2017-11-09T11:29:04Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [November 9, 2017, 11:40am UTC](https://discuss.elastic.co/t/what-is-the-date-format-to-be-used-with-logstash-to-match-9-digits-millisecond/107032/2 "2017-11-09T11:40:04Z")

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That timestamp has microsecond precision (9 decimals). Unfortunately timestamps in Elasticsearch only go down to milliseconds (3 decimals) so I do not think you will be able to accurately represent that full timestamp in Elasticsearch. You may need to parse out the last 6 decimals and put these into a separate field.

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