# popoverFormat

Determines the date format of title of the popover created by the [moreLinkClick](moreLinkClick.md) option.

<div class='spec'>

[Date Formatter](date-formatting.md), *default*:

```js
{ month: 'long', day: 'numeric', year: 'numeric' }
```

</div>

The default value produces strings like `Monday, September 24`.