The Three Types Of Twilight
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Key Facts In This Video
During civil twilight, the sky is still fairly light, as the sun has only just dipped below the horizon. 00:19
Day formally becomes night when the sun is more than 18 degrees below the horizon. 00:50
During the parts of midsummer when the sun is especially high in the sky, it never technically becomes night in the UK. 01:01
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