General Navigation USCG Question #1623 (Set 51)

In low latitudes, a first quarter Moon will always rise at about __________.

Official USCG Answer & Rule Citation

Correct Answer: Option A — 1200 LMT

According to Bowditch, the Moon's phase cycle relates directly to its angular distance from the Sun. At first quarter, the Moon is 90 degrees east of the Sun, setting the moonrise at approximately 1200 Local Mean Time in low latitudes.

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