# Problem date parsing

**URL:** <https://discuss.elastic.co/t/problem-date-parsing/84020>\
**Category:** Logstash\
**Created:** [April 28, 2017, 2:09pm UTC](https://discuss.elastic.co/t/problem-date-parsing/84020 "2017-04-28T14:09:11Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Sam67000](https://avatars.discourse-cdn.com/v4/letter/s/53a042/32.png) [@Sam67000](https://discuss.elastic.co/u/Sam67000)\
**Post date:** [April 28, 2017, 2:09pm UTC](https://discuss.elastic.co/t/problem-date-parsing/84020/1 "2017-04-28T14:09:11Z")

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Hello everybody.  
I have a small problem with some type of log annd I need your help.  
I couldn't extract the date.

The logs are as follows :

> [2017/04/25 15:39:46.255][Info] Block [[Main]][1][ALLOCALL]  
> [2017/04/25 15:39:46.255][Info] Value '' is assigned to variable [NUMEROCOLORE]  
> [2017/04/25 15:39:46.255][Info] Jump to block [[Main]][660]

I tried with the following filter but it doesn't work :  
match =\> {"message" =\> "^%{TIMESTAMP\_ISO8601:Date}"}

Thank you for ur help !

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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:** [April 28, 2017, 2:13pm UTC](https://discuss.elastic.co/t/problem-date-parsing/84020/2 "2017-04-28T14:13:51Z")

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You have two problems:

- Your grok expression needs to take into account that your log line starts with `[`.
- Your timestamp isn't in ISO8601 format so you can't use TIMESTAMP\_ISO8601.

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<div class="post-metadata">

**Author:** ![Sam67000](https://avatars.discourse-cdn.com/v4/letter/s/53a042/32.png) [@Sam67000](https://discuss.elastic.co/u/Sam67000)\
**Post date:** [April 28, 2017, 2:23pm UTC](https://discuss.elastic.co/t/problem-date-parsing/84020/3 "2017-04-28T14:23:56Z")

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Is that better :  
match =\> {"message" =\> "[%{YEAR}/%{MONTH}/%{MONTHDAY} %{TIME}]:Time"}

It doesn't work also.

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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:** [April 28, 2017, 2:27pm UTC](https://discuss.elastic.co/t/problem-date-parsing/84020/4 "2017-04-28T14:27:42Z")

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Try this expression:

```
^\[(?<Time>%{YEAR}/%{MONTHNUM}/%{MONTHDAY} %{TIME})\]...
```

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<div class="post-metadata">

**Author:** ![Sam67000](https://avatars.discourse-cdn.com/v4/letter/s/53a042/32.png) [@Sam67000](https://discuss.elastic.co/u/Sam67000)\
**Post date:** [April 28, 2017, 2:38pm UTC](https://discuss.elastic.co/t/problem-date-parsing/84020/5 "2017-04-28T14:38:30Z")

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It's work ! Thank you very much !!!

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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:** [May 26, 2017, 2:44pm UTC](https://discuss.elastic.co/t/problem-date-parsing/84020/6 "2017-05-26T14:44:45Z")

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