American English (US)
09-13-2018 = September 13th, 2018
Convert and Write Out the Date, in Words:
September the thirteenth, twenty eighteen
or: September the thirteenth, two thousand eighteen
In American English the month is said first, followed by the day.
* The definite article 'the' can be left out:
September thirteenth, twenty eighteen
or: September thirteenth, two thousand eighteen
British English (UK)
13-09-2018 = 13th September, 2018
Convert and Spell Out the Date, in Words:
the thirteenth of September, twenty eighteen
or: the thirteenth of September, two thousand and eighteen
In British English the day is said first, followed by the month.