Is there always a comma before and after a year in a sentence? [duplicate]
Solution 1:
A comma is not needed when only month and year are given. If the date is added, then a comma should separate the year from whatever follows in the sentence (June 2, 2010, was the best day in Fred's life.) If the more British order for the date is given, no commas are required. (The contract was signed on 2 June 2010 at the attorney's office.)
Chicago Manual of Style, 16th Edition, p. 322.