11:57
00:07
12小时17分钟
正午时间:
18:02
距离:
151,698km
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日出时间=(24-昼长)/2
日落时间=日出时间+昼长
或:一天有24小时,包括白天和黑夜,夜长=24-昼长。而凌晨0:00可以看作是黑夜的中点,日出时间=夜长/2,日落时间=24-日出时间。