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The equinox

The equinox is discussed.
Sun angles different time of year
© Image by Ico Broekhuizen
The equinox is also often used when undertaking sun simulations. The equinox is when the sun is over the Earth’s equator. This occurs twice a year, around 20 March and 23 September. This means that, unlike the solstice, the day and night are approximately of equal length.

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