> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/FrequencyCapTimeUnitEnum.FrequencyCapTimeUnit).

Unit of time the cap is defined at (for example, day, week).

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/enums/frequency_cap_time_unit.proto)

| Enums ||
|---|---|
| ## `DAY` | The cap would define limit per one day. |
| ## `MONTH` | The cap would define limit per one month. |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |
| ## `WEEK` | The cap would define limit per one week. |