Use the following format to indicate a date: month day, year, as in July 31, 2010. Do not use day month year or an all-number method. Do not use ordinal numbers to indicate a date.
Microsoft style
February 23, 2011
June 11, 2007
Not Microsoft style
23 February 2011
6/10/11
11/6/07
April 21st
When a date appears in the middle of a sentence, set off the year with commas.
Microsoft style
The February 23, 2011, issue of the New York Times ….
Not Microsoft style
The February 23, 2011 issue of the New York Times ….
The February 23 2011 issue of the New York Times ….
To indicate a month and year only, do not use commas.
Microsoft style
The February 2011 issue of MSDN Magazine ….
Do not use abbreviations of months unless necessary to save space. If you must use abbreviations, use three-letter abbreviations: Jan., Feb., Mar., Apr., May, Jun., Jul., Aug., Sep., Oct., Nov., and Dec.
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