Determining the Four Quarters of Your Personal Lunar Cycle
by Samten Wiliams

Your Sun-Moon phase-angle return = 0° or Personal New Moon.

Add 90° for each subsequent quarter.

Subtract 36° from the phase-angle return for the Dark of the Moon in the Personal Lunar Cycle.

(36° = three days in lunar movement, three days before the New Moon phase = Dark of the Moon phase.)

Example:

Sun-Moon phase angle of 165° = Personal New Moon

90° + 165° = 255° = Personal First Quarter

90° + 255° = 345° = Personal Full Moon

90° + 345° = 435° - 360° = 75° = Personal Last Quarter

65° - 36° = 129° = Personal Dark of the Moon