They are related to seasons because of the tilt. When the Earth tilts the sun faces the Southern Hemisphere so since the nothern hemisphere has no light we have summer in the southern, but when the sun moves in to the northern hemisphere we have winter.
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None. The Vernal Equinox is in March and the Summer Solstice is in June. There is no solstice or equinox in May.
Solstices and Equinoxes are points in the orbit of the Earth around the sun, hence directly related to seasons
The four days that separate the seasons are; March 20th or 21st ~ Vernal Equinox, December 22nd or 23rd~ Winter Solstice, September 22nd or 23rd~ Autumnal Equinox, and June 21st or 22nd~ Summer Solstice.
March 21st is the official day of spring but March 22nd is the first full day of spring.
Equinox. These words both refer to astronomical events related to the tilt of the Earth's axis.
running is the answer
the vernal equinox
22nd September is the beginning of Spring in the Southern Hemisphere but the beginning of Autumn ["Fall" in ther USA] in the Northern Hemisphere. 22nd April is the beginning of Autumn in the Southern Hemisphere but the beginning of Spring in the Northern Hemisphere. 22nd June is the beginning of Winter in the Southern Hemisphere but the beginning of Summer in the Northern Hemisphere. 22nd December is the beginning of Summer in the Southern Hemisphere but the beginning of Winter in the Northern Hemisphere.
They are related to seasons because of the tilt. When the Earth tilts the sun faces the Southern Hemisphere so since the nothern hemisphere has no light we have summer in the southern, but when the sun moves in to the northern hemisphere we have winter.
fall equinox partial equinox
No. September has an equinox.