The March and September equinoxes are similar in that both mark the points in the year when day and night are approximately equal in length across the globe. They occur when the sun is directly above the equator, resulting in this balance of light. Additionally, both equinoxes signify the transition between seasons: the March equinox heralds the arrival of spring in the Northern Hemisphere and autumn in the Southern Hemisphere, while the September equinox marks the onset of autumn in the Northern Hemisphere and spring in the Southern Hemisphere.
The equinoxes (approximately 21 March & 21 Sept).
At the two equinoxes (about 22 September and 20 March).
The month in which the hours of daylight and darkness are closest to those of March is September. This is because both months are near the equinoxes, when day and night are approximately equal in length. In March, the vernal equinox occurs, and in September, the autumnal equinox does, resulting in similar day length patterns.
One of the two equinoxes. March 20/21 or September 22/23
If you are at the equator, the SUN will be directly overhead during the equinoxes - around 21 March, and 23 September.
These are on or about the equinoxes
Equinoxes occur twice a year - around 21 March, and around 23 September.
The vernal and autumnal equinoxes, respectively.
A day on either side of March 21 and September 22.
The equinoxes (approximately 21 March & 21 Sept).
At the two equinoxes (about 22 September and 20 March).
They occur around 20 March and 23 September.
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.
In both March and September, close to the two equinoxes.
The Spring and Autumn equinoxes: 20 March and 22 September.
When you live near the equator, or at the equinoxes (March 20 or 21, September 22 or 23).
These are the spring and autumn equinoxes, and are days when the daylight and darkness are equal.