Spring and Autumn/Fall, for the Northern Hemisphere spring equinox is around March 21st and Autumn/Fall Equinox is around September 21st and for the Southern Hemisphere its the exact opposite.
No, the solstices and equinoxes mark the beginnings of the four seasons.
summer and winter
The two seasons that begin with solstices rather than equinoxes are summer and winter.
" seasons are the manifestation of solsticesand equinoxesand are markers of the seasons
The equinoxes and solstices are the first days of seasons. On the equinoxes, night and day is the same length. On the solstices, the day is either the longest or the shortest day of the year, depending on which solstice it is and which hemisphere you are in,
The seasons are already figured out . . . the seasons change on the equinoxes (days and nights of equal length) and on the soltices (days and nights are the most different in length)
the equinoxes occur
The year has two equinoxes, which are the days on which the night and day are of equal length. They happen when the apparent position of the Sun (on the ecliptic) crosses the Earth's equator.The equinoxes are usually March 21 and September 22, and on those days the Sun has a declination of zero and is overhead at the equator.
Solstices and Equinoxes are points in the orbit of the Earth around the sun, hence directly related to seasons
Because the Earth is going around the sun every 365-366 days. The equinoxes create the seasons such as spring, summer, fall, and winter. Each equinox is a place on the circle of the Earths path.
91 and a fraction days. The dividing points are the two solstices and two equinoxes. You can see the precise dates of the equinoxes and solstices on the "Earth's Seasons" web site at the US Naval Observatory, at the link below.
Solstices and Equinoxes are points in the orbit of the Earth around the sun, hence directly related to seasons