Autumn officially begins at 7:21 A.M. (PT) and marks the transition from summer into winter.

This year the solstice falls today at 6:34 p.m. EDT. This is the “summer”
solstice in the Northern Hemisphere. The word solstice is from the
Latin solstitium, from sol (sun) and stitium (to stop). Astrologers say
the sun seems to ‘stand still’ at the point on the horizon where it 
appears to rise and set, before moving off in the reverse direction.

This 1958 single reached #26 on the Billboard Hot 100.

Winter solstice is the day with the fewest hours of sunlight during the
whole year. The word solstice comes from the Latin words for “sun”
and “to stand still.” Winter this year officially begins tonight at 11:48
P.M. EST. After this date, the days start getting “longer,” i.e., the
amount of daylight begins to increase.