What event marks the beginning of spring in the Northern Hemisphere around March 20th?

Answer

The Sun crossing the celestial equator moving northward.

The transition into spring in the Northern Hemisphere occurs when the Sun crosses the celestial equator heading northward, an event known as the vernal equinox.

What event marks the beginning of spring in the Northern Hemisphere around March 20th?

#Videos

The Ecliptic: Crash Course Kids #37.2 - YouTube

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