Question

when is the spring equinox typically observed? *
december 21st
june 21st
september 23rd
march 20th

Explanation:

The Spring Equinox in the Northern - Hemisphere typically occurs around March 20th or 21st. It marks the beginning of spring when the length of day and night are nearly equal. December 21st is around the winter - solstice, June 21st is around the summer - solstice, and September 23rd is around the autumnal equinox.

Answer:

D. March 20th