A History of Short Words

From the New York Times Crossword Puzzle

DEC

Sun, 29 Dec '24
Winter mo.
Fri, 22 Nov '24
Cal. ender
Mon, 19 Feb '24
Mo. when winter officially starts
Fri, 22 Sep '23
Mo. when Kwanzaa starts
Thu, 18 Aug '22
Prefix meaning "10" that's associated with 12
Sun, 6 Mar '22
Universal Human Rights Mo.
Tue, 7 Dec '21
'Tis the season: Abbr.
Mon, 16 Aug '21
Xmas mo.
Sun, 14 Mar '21
Abbr. at the end of a planner