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[–]OnlineBackupArchive 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

The date itself marks half-way point of length of day: the 24th is when the sun 'dips' over to the 'night side'.

3 days prior, the days and nights are 50/50.

Longer nights thereafter.

Exactly 1/4 of a year - one season - from when the sun starts to rise again.

Astronomically speaking.