American English (US)
01-01-2015 = January 1st, 2015
Convert and Write Out the Date, in Words:
January the first, twenty fifteen
or: January the first, two thousand fifteen
In American English the month is said first, followed by the day.
* The definite article 'the' can be left out:
January first, twenty fifteen
or: January first, two thousand fifteen
British English (UK)
01-01-2015 = 1st January, 2015
Convert and Spell Out the Date, in Words:
the first of January, twenty fifteen
or: the first of January, two thousand and fifteen
In British English the day is said first, followed by the month.