the vernal equinox
The spring 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.
The next equinox will be the vernal (spring) equinox, which occurs on or around March 20, 2024. This event marks the beginning of spring in the Northern Hemisphere and fall in the Southern Hemisphere. The next solstice, the summer solstice, will follow on June 21, 2024, marking the longest day of the year in the Northern Hemisphere.
There is no "spring solstice", there is a spring equinox and a summer solstice.
There is only two equinoxes, Autumnal equinox(fall) starts on Sept. 22 or 23, and Vernal equinox(spring) starts on March 20 or 21.
The spring 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.
fall equinox partial equinox
There is no "spring solstice", there is a spring equinox and a summer solstice.
The vernal equinox is the first day of spring (occurring when the North Pole begins to lean toward the sun). The autumnal equinox is the first day of autumn (occurring when the North Pole leans away from the sun).
There is only two equinoxes, Autumnal equinox(fall) starts on Sept. 22 or 23, and Vernal equinox(spring) starts on March 20 or 21.
March 21st is the official day of spring but March 22nd is the first full day of spring.
The longest day and shortest night occurs on the summer solstice. The shortest day and longest night occurs on the winter solstice. Midway between these points (2x a year) are the equinox, where the day and night are of equal length.
Spring equinox occurs around March 20 and Fall equinox occurs around September 22 for the Northern Hemisphere. For the Southern Hemisphere these dates are opposite; the Spring equinox is around September 22 and the Fall equinox occurs around March 20.
The spring Equinox occurs on April 21 st. The fall Equinox is on September 21 st. The summer Solstice occurs on June 21 st and the winter Solstice occurs on December 21 st.
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.
it ends at the spring equinox, also called the vernal equinox.