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At the time of the "First Quarter" and "Third Quarter" phases, the moon appears

half-illuminated. These occasions are roughly 7 days and 21 days after New Moon

respectively, and Full Moon occurs at the time exactly midway between them.

Note:

Both phases are easily visible in the daytime. First Quarter rises in the east

around Noon, and Third Quarter sets in the west around Noon.

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15y ago

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