A History of Short Words

From the New York Times Crossword Puzzle

SEP

Sun, 11 Jan '26
Leaf-turning mo.
Sun, 4 Jan '26
Birth month of most Virgos: Abbr.
Sat, 22 Jun '24
Mo. in which the U.S. Constitution was signed
Thu, 25 May '23
International Day of Peace mo.
Sun, 2 Oct '22
Equinox mo.
Fri, 18 Feb '22
Equinox mo.
Sun, 31 Oct '21
Fall mo.