Live Science
On Monday, Sept. 22, day and night will be nearly equal in length as Earth’s axis is side-on to the sun, officially beginning autumn in the Northern Hemisphere…
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When is the fall equinox, and why does it happen?
Laine Stoval
18:21
On Monday, Sept. 22, day and night will be nearly equal in length as Earth’s axis is side-on to the sun, officially beginning autumn in the Northern Hemisphere…
