Sept. 11 – The term for describing the attacks in the United States on Sept. 11, 2001. Use 2001 if needed for clarity. Also acceptable is 9/11. See 9/11.
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Sept. 11
Reuters: The date can stand alone without reference to the Twin Towers or the year 2001, as can the alternative reference 9/11.
Sept 11
AP: The term for describing the attacks in the United States on Sept. 11, 2001. Use 2001 if needed for clarity. Also acceptable is 9/11. See 9/11.
