0001-001 A.A.
00:0000:00
0001-001 00:0000:00 A.A. LMT
—
—
—
—
29h 31m 50s Earth time
—
—
Lunar day progression
New Moon
00:0000First Quarter
06:0000Full Moon
12:0000Last Quarter
18:0000New Moon
24:0000
00:0000First Quarter
06:0000Full Moon
12:0000Last Quarter
18:0000New Moon
24:0000
New Moon • 00:000%New Moon • 24:00
Cycle information
Lunar day29.530588853 Earth days
Lunar hour29h 31m 50s Earth
Lunar minute29m 31.85s Earth
Lunar second29.5306 Earth seconds
Calendar epochApollo 11 Landing
Jul 20 1969 20:17:40 UTC
Jul 20 1969 20:17:40 UTC
Clock basisLunar solar day
phase-aligned
phase-aligned
Phase referenceNew Moon
Jan 6 2000 18:14 UTC
Jan 6 2000 18:14 UTC
Near-side noonFull Moon
≈ 12:00
≈ 12:00
Moon Calendar
Moon Year 0001 A.A.
Calendar notation follows the Gregorian ordering of larger unit → smaller unit. A lunar timestamp is written YYYY-DDD HH:MMMM:SS A.A./B.A.. A.A. begins with the Apollo 11 lunar landing; B.A. counts backward before Apollo. There is no year zero.
Earth ↔ Moon date converter
⇄
Enter either timestamp. Moon dates use YYYY-DDD HH:MMMM:SS A.A. or B.A.