> For the complete documentation index, see [llms.txt](https://docs.adalysis.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.adalysis.com/tools/ad-testing/faqs/date-range-used-for-ad-testing.md).

# Date range used for ad testing

From our ad testing FAQs

<figure><img src="https://3203600314-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGlXujWJyreRidNjZDCw2%2Fuploads%2FMHvWO7AcoMey18j0XVB8%2F%7B2F11EA50-4BE4-42F2-8BC8-7311CAB22619%7D.png?alt=media&amp;token=2af95db0-874e-463a-bef3-9b07bd8a6dab" alt="" width="458"><figcaption></figcaption></figure>

When running ad tests, Adalysis can either:

* Choose the **most appropriate date range** automatically, using [Ad Enabled dates](/tools/ad-testing/faqs/ad-enabled-date.md)
* Use a date range **you specify**

The predefined date ranges in Adalysis are:

* 7 days (1 week)
* 14 days (2 weeks)
* 21 days (3 weeks)
* 30 days (\~4 weeks)
* 6 weeks
* 60 days (\~8 weeks)
* 90 days (\~13 weeks)
* 180 days (\~26 weeks)

{% hint style="success" %}
When you first link an account to Adalysis, **we'll work out when each of your active ads was enabled**.
{% endhint %}