How to write a date in English. There are several ways how to write an English date:
British English
1st July 2005 (this is the preferred style in the UK)
1 July 2005
01/07/2005 (=day/month/year)
In British English the day is usually put before the month. If you wish, you can add the ending of the ordinal number. The preposition of before the month is usually dropped. You can put a comma before the year, but this is not common anymore in British English.
Example: 5(th) (of) October(,) 2004
American English
July 1, 2005 (this is the preferred style in the US)
July 1 2005
July 1st, 2005
07/01/2005 (= month/day/year)
In American English the month is usually put before the day. If you wish, you can put the definite article before the day. It is common to write a comma before the year.
Example: October (the) 5(th), 2004
source: http://www.ego4u.com/en/cram-up/vocabulary/date/written