What phenomenon occurs when the plane of Earth's equator intersects the geometric center of the Sun's disk?

Equinoxes occur when the plane of the Earth's equator intersects the geometric center of the Sun's disk. This happens twice a year, on the approximate dates of March 20 and September 23. In other words, it's the instance when the visible Sun's center is exactly above the equator.

Asked by Vasilii Kulev · Last updated 4 years ago · 4.2K views · SOURCE