๐ Moon Phase Calculator
Real synodic lunar phase calculation for any date โ same algorithm and reference epoch used elsewhere on this site.
๐ Waxing Gibbous
Illumination: 89.8% โ Age: 11.71 days into the cycle
Rich mare and lunar ray detail visible, but sky-glow starts to bleach faint deep-sky targets.
Upcoming Major Phases
๐ Full Moon
July 31, 2026 (in 5 days)
๐ Last Quarter
August 7, 2026 (in 12 days)
๐ New Moon
August 15, 2026 (in 20 days)
๐ First Quarter
August 22, 2026 (in 27 days)
Real client-side synodic calculation (29.530588853-day mean lunar month + a known reference new-moon epoch) โ not a live external ephemeris feed.