Moon & Calendar

Moon Phase calculation by Sky & Telescope

Moon phase calculation algorithm by Roger W. Sinnott, Sky & Telescope. Calculations are based on UTC,not local time.

Date may differ from that selected by Christian churches.

Dec 2023

—S—M—T—W—T—F—S—

00 00 00 00 00 01 02
03 04 05 06 07 08 09
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31 00 00 00 00 00 00