Known as "First Quarter". The moon appears half-illuminated. If you are in the Northern Hemisphere, it is the half you see to your RIGHT. The moon rises in the east at roughly Noon, and sets in the west at roughly Midnight.
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One week after a full moon, the moon phase is typically in its waning gibbous phase. This means that it is transitioning from being a full moon to a third quarter moon.
Approximately one week after the new moon phase, the waxing crescent moon phase occurs. This phase is characterised by a small sliver of the moon becoming visible on the right side.
It takes approximately 29.5 days for the moon to go from one full moon phase to the next when viewed from Earth. This period is known as a lunar month or synodic month.
It takes approximately 29.5 days for the moon to go from one full moon phase to the next full moon phase when viewed from Earth. This period is known as a lunar month or synodic month.
There are two phases of the moon that appear to be a half disk: the first quarter and the third quarter. The entire cycle of moon phases takes about 28 days (27.3217 days). Counting the day of a new moon as the first day, then the phases in order are: • waxing crescent • first quarter (a half lit moon resembling the letter "D") at end of week one • waxing gibbous • full at end of week two • waning gibbous • third quarter (a half lit moon resembling the letter "C") at end of week three • waning crescent • and back to the new moon, completing the cycle after week four
The time period between each moon phase is around 7.4 days, with the four main phases (new moon, first quarter, full moon, last quarter) occurring approximately every 29.5 days in a complete lunar cycle.