American English (US)
08-17-2040 = August 17th, 2040
Convert and Write Out the Date, in Words:
August the seventeenth, twenty forty
or: August the seventeenth, two thousand forty
In American English the month is said first, followed by the day.
* The definite article 'the' can be left out:
August seventeenth, twenty forty
or: August seventeenth, two thousand forty
British English (UK)
17-08-2040 = 17th August, 2040
Convert and Spell Out the Date, in Words:
the seventeenth of August, twenty forty
or: the seventeenth of August, two thousand and forty
In British English the day is said first, followed by the month.