> For the complete documentation index, see [llms.txt](https://userguidesgitbook.aerofiler.com.au/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://userguidesgitbook.aerofiler.com.au/single-file-view/key-dates.md).

# Key Dates

Aside from expiries, renewals, and notification periods, Aerofiler can also track key contractual dates. For example, suppose you have an insurance document expiring on 31 October 2022. In the single file view, scroll down to the “Key Dates” section and click “Add Key Date”:

<figure><img src="/files/9vEnZIcATc15PdJClxqf" alt=""><figcaption></figcaption></figure>

Then enter the date and a description and click “Save”:

<figure><img src="/files/Q5PmMnusP4HBiAUKbAbn" alt=""><figcaption></figcaption></figure>

The key date should appear as follows:

<figure><img src="/files/8kpIZ3wHDkilg8knhdn4" alt=""><figcaption></figcaption></figure>