A History of Short Words

From the New York Times Crossword Puzzle

OCT

Wed, 5 Oct '22
L.G.B.T. History Mo.
Tue, 19 Apr '22
Month with a so-called "hunter's moon": Abbr.
Mon, 15 Nov '21
Mo. for trick-or-treaters
Thu, 26 Aug '21
Bat Appreciation Month, appropriately: Abbr.
Sun, 4 Jul '21
What "10" might mean: Abbr.
Wed, 10 Feb '21
Mo. with a holiday on its final day