Create three mappings using the Formidable: Dynamic setting found at the bottom of the “Webform Data Field ID” dropdown on the field map layout along with PHP date function like this… change [123] to your date field;

1st Field Map, for “DAY” we use…
[123 format=”jS”]
(Where ‘j’ is the number date without leading zeros and ‘S’ provides the letters “st”, “nd”, “rd”)

2nd Field Map, for “MONTH” we use…
[123 format=”F”]
(Where ‘F’ provides the full month in words)

3rd Field Map, for “YEAR” we use…
[123 format=”Y”]
(Where ‘Y’ provides the four digit year)

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As linked above, you can use any of the parameters found on this PHP Date Functions page. Two year is ‘y’

We remain at your service.