A History of Short Words

From the New York Times Crossword Puzzle

PST

Thu, 25 Apr '24
Vegas winter hrs.
Tue, 27 Feb '24
L.A. winter clock setting
Fri, 22 Dec '23
Setting for most Laker home games: Abbr.
Sun, 19 Feb '23
Winter setting in S.F.
Tue, 31 Jan '23
Winter clock setting in Calif.
Mon, 2 Jan '23
Winter hrs. in L.A.
Sun, 19 Jun '22
It's observed at LAX during part of the year
Sun, 3 Apr '22
SFO setting: Abbr.
Thu, 13 Jan '22
Winter hrs. in Seattle
Thu, 26 Aug '21
L.A. winter hrs.
Mon, 23 Aug '21
West Coast winter hrs.