# I would like to concatenate date and time fields with logstash

**URL:** <https://discuss.elastic.co/t/i-would-like-to-concatenate-date-and-time-fields-with-logstash/275992>\
**Category:** Logstash\
**Created:** [June 15, 2021, 11:58am UTC](https://discuss.elastic.co/t/i-would-like-to-concatenate-date-and-time-fields-with-logstash/275992 "2021-06-15T11:58:58Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sudo-ranjith](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sudo-ranjith/32/89146_2.png) [@sudo-ranjith](https://discuss.elastic.co/u/sudo-ranjith)\
**Post date:** [June 15, 2021, 11:58am UTC](https://discuss.elastic.co/t/i-would-like-to-concatenate-date-and-time-fields-with-logstash/275992/1 "2021-06-15T11:58:58Z")

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Hi There,

I have two fields date and time("10/26/20","09:30:53").  
My Grok patterns are "%{DATA:date}","%{DATA:time}"

I would like to concatenate these two fields as datetime,  
Could you please help me on the same.

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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 15, 2021, 2:04pm UTC](https://discuss.elastic.co/t/i-would-like-to-concatenate-date-and-time-fields-with-logstash/275992/2 "2021-06-15T14:04:04Z")

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You can use sprintf references

```
mutate { add_field => { "datetime" => "%{date} %{time}" } }
```

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<div class="post-metadata">

**Author:** ![sudo-ranjith](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sudo-ranjith/32/89146_2.png) [@sudo-ranjith](https://discuss.elastic.co/u/sudo-ranjith)\
**Post date:** [June 15, 2021, 2:05pm UTC](https://discuss.elastic.co/t/i-would-like-to-concatenate-date-and-time-fields-with-logstash/275992/3 "2021-06-15T14:05:52Z")

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Thanks @Badger .

I have configured 2 logstash.conf file in pipelines.yml file,  
can you please tell me how can I run the pipelines.yml file.  
I got struct for more than an hour in this.

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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 13, 2021, 2:06pm UTC](https://discuss.elastic.co/t/i-would-like-to-concatenate-date-and-time-fields-with-logstash/275992/4 "2021-07-13T14:06:23Z")

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