When a parameter is marked as of type "date" in the template data of a cite template, ProveIt displays a Today button next to it, that when clicked, inserts today's date in the format yyyy-mm-dd. This is the preferred format according to the template data documentation and the English Wikipedia documentation, but in some occasions and in some wikis it may not be the preferred format.
The date format should be configurable at the wiki-level when initializing the gadget at MediaWiki:Gadget-ProveIt.js.
The date format should also be configurable at the template-level through the maps object. For example, the maps object could look like so:
```
{
"date-format": "dmy",
}
```
This would tell ProveIt to format the dates in that template according to this day-month-year pattern.
Finally, the date format should be configurable at the reference-level by using the maps object to tell ProveIt which parameter defines the date format. For example, in the English Wikipedia, such parameter is called "df" in the Cite book template, so the maps object should look like so:
```
{
"date-format-parameter": "df",
}
```