American English (US)
08-13-623 = August 13th, 623
Convert and Write Out the Date, in Words:
August the thirteenth, six twenty-three
In American English the month is said first, followed by the day.
* The definite article 'the' can be left out:
August thirteenth, six twenty-three
British English (UK)
13-08-623 = 13th August, 623
Convert and Spell Out the Date, in Words:
the thirteenth of August, six twenty-three
or: the thirteenth of August, six hundred and twenty-three
In British English the day is said first, followed by the month.