Friday, 22 September 2017

Autumn Equinox in the Northern Hemisphere

Today is the Autumn Equinox in the Northern Hemisphere, and the Spring Equinox in the Southern Hemisphere.

Every place on earth experiences 12 hours of daylight twice a year, around the Spring and Autumn Equinox.

At the Equinoxes, the Sun rises almost exactly in the east, travels through the sky for 12 hours, and sets almost exactly in the west.

The September equinox marks the moment the Sun appears to cross the celestial equator – the imaginary line in the sky above the Earth’s equator – from north to south. 

After the September equinox, northern days continue to shorten until the December solstice.

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