In American English date representation, the month comes before the day, followed by the year. In British English the day comes before the month, followed by the year.
American English (US)
09-21-2070 = September 21st, 2070
Convert and Write Out the Date, in Words:
September the twenty-first, twenty seventy
or: September the twenty-first, two thousand seventy
In American English the month is said first, followed by the day.
* The definite article 'the' can be left out:
September twenty-first, twenty seventy
or: September twenty-first, two thousand seventy
British English (UK)
21-09-2070 = 21st September, 2070
Convert and Spell Out the Date, in Words:
the twenty-first of September, twenty seventy
or: the twenty-first of September, two thousand and seventy
In British English the day is said first, followed by the month.