See:
Writing the date

Also:
http://www.casadoalan.com/Dates.html

Actually having looked at the link above, I don't agree with it...

10th March or 10 March is spoken as:

"the tenth of March"

March 10th or March 10 is spoken as:

March the tenth (UK)
March tenth (USA) - American speakers, please confirm...

However, when writing the date in numbers:

10/3/2006

= Tenth of March in the UK, but

Better, perhaps:

Writing the Date

http://www.englishclub.com/vocabulary/time-date.htm

Much better! The only problem with this one is that the UK and US English examples used in Formats A, B, and C are both used in the UK and not just the USA.

Hence in the UK we can write either:

A the Fourteenth of March, 1999 or March the Fourteenth, 1999
B 14th March 1999 or March 14th, 1999
C 14 March 1999 or March 14, 1999

The latter of the two in the abov