Is this correct

Generally, dates are in the order of day, month and year. In American English, dates are normally in the month, day and year order.

AnonymousToday is March twenty first, two thousand fifteen. (to say March 21, 2015 or 21 March 2015).

That's how most AE speakers say it.

As a BE speaker, I say 'the twenty-first of March, twenty-fifteen'. However, my wife prefers to call the year 'two thousand and fifteen'.

Thanks, I'm wondering if these are correct:

e.g.,

Today is the twenty-second of March, twenty-oh-one. (March 22, 2001)
Today is March twenty second, two thousand one. (March 22, 2001)
Today is March twenty second, twenty nil one. (March 22, 2001)