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Today is the solstice, the shortest day of the year... so why isn't it the earliest sunset?

21 Dec 2018, 14:00 UTC
Today is the solstice, the shortest day of the year... so why isn't it the earliest sunset? NASA/Przemyslaw "Blueshade" Idzkiewicz

Because the Earth's axis is tilted, the Sun's path across the sky over a year is at an angle to the declination gird, so we see it move north and south. It reaches its maxima at the solstices, in June and December, usually around the 21st or so. In December the Sun reaches its most southerly declination, about -23.5° south of the celestial equator.

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