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A comment on The Eerie Beauty of the Apple Watch Solar Face, and the Anatomy of Nightfall. Parent comment

Re:The Eerie Beauty of the Apple Watch Solar Face, and the A... by throw0101a on Sunday January 03, 2021 @10:01AM (#25622116)
> In the military knowing first-light and last-light, down to within a few minutes, is essential daily.

Why is that?

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Re:The Eerie Beauty of the Apple Watch Solar Face, and the A... by yeswatch on Sunday January 03, 2021 @12:29PM (#25623218)
Because there is a dramatic difference between nocturnal and daylight operations. https://www.yeswatch.com/wrist-watch/worldwatch/past-collect...
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