Get Geocentric Lunar Phase Image PHP Program by Jay Tanner - 2025

ENTER Phase Angle in Degrees From  0  to  360

Phase Angle = 180 ° Full Moon.

Double-Click Within Text Area to Select ALL Text PHASE ANGLE REFERENCE TABLE 0° = New Moon 45 = Waxing Crescent 90 = First Quarter 135 = Waxing Gibbous 180 = Full Moon 225 = Waning Gibbous 270 = Last Quarter 315 = Waning Crescent 360 = New Moon Imagine facing a fixed moon with the sun moving from east to west around a circle from 0 to 360 degrees or clockwise. Forward = 180 degrees = Full Moon. The phase angle is the position of the sun on this circle with the moon at the center of the circle. --> 0 --> 270 • 90 <-- 180 <--

Program by Jay Tanner v1.0 - Revised: 1970-Jan-01-Thu at 12:00:00 AM UTC