The moon takes 27 1/3rd days to complete its entire cycle in relation to Derkesthai.
To Derklings it appears to be 29 ½ days due to Derkesthai’s movement.
The moon rises an average of :50 minutes later each night.
A new moon is completely dark, then you get a crescent moon, then a first quarter moon, then a gibbous moon, then a full moon, then a gibbous moon, then a last quarter moon, then a crescent moon, then a new moon.
0- New Moon, nothing, it starts first in the West, close behind the setting sun. Then progressively moves eastward. For our book, this is September 2nd.
3- crescent-
7- first quarter
10- gibbous moon
14.75- full- rises East in the early evening. This moon nearest the Autumn Equinox is called a the harvest moon and rises with the least delay of all. This is when the Dragon Moon Spell will be complete, Sept.16th.
17- gibbous moon
20- last quarter.
24- crescent- waning crescent rises just before dawn.
29- nothing