} }

Motions of the Earth

Motions of the Earth > Ask Alfie
cee
Hi
When does the day and night equal throughout the earth?
user
cee
On 21st March and September 23rd, direct rays of the sun fall on the equator. At this position, neither of the poles is tilted towards the sun; so, the whole earth experiences equal days and equal nights. This is called an equinox. On 23rd September, it is autumn season in the Northern Hemisphere and spring season in the Southern Hemisphere. The opposite is the case on 21st March,when it is spring in the Northern Hemisphere and autumn in the Southern Hemisphere.
cee
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