In the northern hemisphere, the autumnal equinox marks the first day of fall. An equinox happens twice a year, when the sun shines directly on the equator and the length of day and night is nearly equal.
Equinoxes
I think its on the equator
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.
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.
The equinoxes are the two points on the celestial equator there the ecliptic(the sun's apparent annual path through the stars) crosses it.Note that the equinoxes are not events or dates. They are points on the mapof the stars.
No, the solstices and equinoxes mark the beginnings of the four seasons.
What are spring and fall equinoxes
Equinoxes
Equinoxes is a noun. It's the plural form of equinox.
At the Equinoxes, the Sun is directly above the equator.
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,
summer and winter
On Equinoxes
There are two equinoxes per year, separated by about 6 months. There will never be two equinoxes in one month.
They're widely and erroneously known as the equinoxes, but they're not.The equinoxes are points on the map of the sky, not points in time.March 21 and September 21 are the dates near which the sun reachesand passes the equinoxes.
These are on or about the equinoxes
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.