Question

what do u know about the astronomical phenomena that take place on 21 march and 23 september​

Answer 1

Answer:

The event known as equinox is eagerly awaited by space enthusiasts as it takes place twice a year on March 21 and September 23. On the equinox day, the sun moves across the celestial equator which lies directly above the earth's equator. ... The word equinox is derived from the Latin words aequus (equal) and nox (night)