Lunar calendar
Phases, without the noise
Upcoming principal phases, calculated from a verified ephemeris and shown in local time. Visibility notes describe the Moon at the exact moment — not a promise about cloud cover.
Times shown for
London
Default location · choose yours in the header
1 principal phase in this month · times local to London
Select any event for local timing and observing notes.
Upcoming phases
Next 2 events · chronological
Calculated phasesWhat is deliberately missing
Eclipses and planetary conjunctions are not listed yet. Both require validated, location-specific visibility geometry and reliable source cross-checks; advertising an eclipse you cannot see would be worse than omitting it. The principal phases below are geocentric events with local time conversion and an altitude check.
A phase is global; the clock time and the Moon's altitude are local. At the exact instant of a full or new Moon, the Moon may be below your horizon even though the phase itself is real.