# Parsing date field value using grok match

**URL:** https://discuss.elastic.co/t/parsing-date-field-value-using-grok-match/60506
**Category:** Logstash
**Created:** [September 14, 2016, 1:30pm UTC](https://discuss.elastic.co/t/parsing-date-field-value-using-grok-match/60506 "2016-09-14T13:30:52Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![rajkamalkool6](https://avatars.discourse-cdn.com/v4/letter/r/e9c0ed/32.png) [@rajkamalkool6](https://discuss.elastic.co/u/rajkamalkool6)
#### Post date: [September 14, 2016, 1:30pm UTC](https://discuss.elastic.co/t/parsing-date-field-value-using-grok-match/60506/1 "2016-09-14T13:30:52Z")

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Hi,

I am trying to parse the date field `timestamp` using `grok expression` under `grok match plugin`. The fields which I have given under `grok match` didn't generated.

grok{  
match =\> {"timestamp" =\> "%{MONTH:month} %{MONTHDAY:monthday}%{DATA:data}%{YEAR:year}, %{HOUR:Hour}:?%{MINUTE:minute}"}  
}

I am not getting month, monthday, year, hour, etc. fields. I am using `Logstash version 2.3.0`

Thanks in advance

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### Author: ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [September 14, 2016, 4:42pm UTC](https://discuss.elastic.co/t/parsing-date-field-value-using-grok-match/60506/2 "2016-09-14T16:42:46Z")

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Please give an example of what the `timestamp` field might contain.

It's pretty unusual to split timestamp into its components like this. Why do you want to do that?

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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 4:38am UTC](https://discuss.elastic.co/t/parsing-date-field-value-using-grok-match/60506/3 "2017-07-06T04:38:28Z")

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