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---
mapped_pages:
- https://www.elastic.co/guide/en/elasticsearch/client/curator/current/fe_date_to_format.html
---
# date_to_format [fe_date_to_format]
::::{note}
This setting is only used with the [period](/reference/filtertype_period.md) filtertype<br> when [period_type](/reference/fe_period_type.md) is `absolute`.
::::
```yaml
- filtertype: period
period_type: absolute
source: name
timestring: '%Y.%m.%d'
unit: months
date_from: 2017.01
date_from_format: '%Y.%m'
date_to: 2017.01
date_to_format: '%Y.%m'
```
The value for this setting should be an strftime string which corresponds to the date in [`date_to`](/reference/fe_date_to.md):
The identifiers that Curator currently recognizes include:
| Unit | Value | Note |
| --- | --- | --- |
| `%Y` | 4 digit year | |
| `%G` | 4 digit year | use instead of `%Y` when doing ISO Week calculations |
| `%y` | 2 digit year | |
| `%m` | 2 digit month | |
| `%W` | 2 digit week of the year | |
| `%V` | 2 digit week of the year | use instead of `%W` when doing ISO Week calculations |
| `%d` | 2 digit day of the month | |
| `%H` | 2 digit hour | 24 hour notation |
| `%M` | 2 digit minute | |
| `%S` | 2 digit second | |
| `%j` | 3 digit day of the year | |
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