Comma in Dates
When writing a date, a comma is used to separate the day from the month, and the date from the year.
The American Declaration of Independence was ratified on July 4, 1776.
I was born on Sunday, May 12, 1968.
On Tuesday, April 13th at three o’clock, there will be a meeting for all staff.
Please join us on Saturday, June 14th, 2010, for the marriage of Annie and Michael.
The application is to be finished by 31 December 2009.
Although inappropriate for use in formal writing, this format does not require any commas.