Terms

4 Phases of Moon

Modern systems typically have 4 phases of the moon:
 
1. Waxing Crescent
2. Waxing Gibbous
3. Waning Gibbous
4. Waning Crescent
 
These four phases correspond to 4 weeks of 7 days.
 
In the system of eight phases the 4 main phases were
 
New Moon, First Quarter, Full Moon, Third Quarter
Spring, Summer, Autumn, Winter
A, B, C, D
 
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