On the first day of spring, a person at the North Pole would see the sun skimming across the horizon, beginning six months of uninterrupted daylight.
A person at the South Pole would see the sun skimming across the horizon, signalling the start of six months of darkness.
The fall and spring equinoxes are the only two times during the year when the sun rises due east and sets due west.
The first day of spring in the Southern Hemisphere is the first day of Autumn in the Northern Hemisphere.
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