A History of Short Words

From the New York Times Crossword Puzzle

FRI

Sat, 2 Sep '23
Most common evening for "Dateline NBC" during its three-decade run: Abbr.
Fri, 16 Jun '23
H.S. football night, usually
Mon, 1 May '23
"Casual" workday: Abbr.
Sat, 24 Dec '22
Good day?: Abbr.
Wed, 19 May '21
Day before 54-Down: Abbr.