Match the following for Northern Hemisphere:
A) 21 March 1) Summer Solstice
B) 23 September 2) Winter Solstice
C) 21 June 3) Spring Equinox
D) 22 December 4) Autumn Equinox
Explanation:
in the Northern Hemisphere:
Vernal equinox (about March 21): day and night of equal length, marking the start of spring
Summer solstice (June 20 or 21): longest day of the year, marking the start of summer
Autumnal equinox (about September 23): day and night of equal length, marking the start of autumn
Winter solstice (December 21 or 22): shortest day of the year, marking the start of winter