# Specify strict\_date\_optional\_time\_nanos format for date data type
**URL:** https://discuss.elastic.co/t/specify-strict-date-optional-time-nanos-format-for-date-data-type/256246
**Category:** Beats
**Tags:** filebeat
**Created:** [November 21, 2020, 10:42pm UTC](https://discuss.elastic.co/t/specify-strict-date-optional-time-nanos-format-for-date-data-type/256246 "2020-11-21T22:42:04Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@chris\_pacb](https://discuss.elastic.co/u/chris_pacb)
#### Post date: [November 21, 2020, 10:42pm UTC](https://discuss.elastic.co/t/specify-strict-date-optional-time-nanos-format-for-date-data-type/256246/1 "2020-11-21T22:42:04Z")
Hi all!
I'm using "setup.template.append\_fields" in filebeat to specify extra fields. I can specify a "type" where I'm using "date" as the data type. How would I specify the "strict\_date\_optional\_time\_nanos" format.
This doesn't work:
```auto
setup.template.append_fields:
- name: dissect.created_utc
type: date
format: strict_date_optional_time_nanos
```
---
### Author:  [@chris\_pacb](https://discuss.elastic.co/u/chris_pacb)
#### Post date: [December 2, 2020, 9:18pm UTC](https://discuss.elastic.co/t/specify-strict-date-optional-time-nanos-format-for-date-data-type/256246/2 "2020-12-02T21:18:07Z")
Just wondering if anyone knew anything about this.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 30, 2020, 11:18pm UTC](https://discuss.elastic.co/t/specify-strict-date-optional-time-nanos-format-for-date-data-type/256246/3 "2020-12-30T23:18:11Z")
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