A History of Short Words

From the New York Times Crossword Puzzle

TUE

Mon, 20 Jun '22
Mon. follower
Fri, 3 Jun '22
Day associated with Mars, in astrology: Abbr.
Sun, 8 May '22
Third column on a calendar: Abbr.
Tue, 15 Jun '21
Election day in the U.S.: Abbr.