Pick any date — tonight, a birthday, a night you remember — and see the moon that hung there.
Friday, October 30, 2026
walk the nights — 0 days from the chosen date
Phase
Waning Gibbous
Moon age
19.1 days
Illuminated
80%
Next full
2026-11-24
Next new
2026-11-09
No Fibs — how this moon is computed
The phase comes from the mean synodic month (29.530588 days) anchored to the January 2000 new moon — a standard astronomical approximation that's typically accurate to about a day, not a professional ephemeris. The moon's orbit is slightly elliptical, so real full moons can land a day off this prediction, and rise/set times and your local horizon aren't included at all. The drawn disc shows the phase shape and lit fraction to scale; craters are decorative. Everything computes in your browser — no account, no uploads, no analytics, nothing saved.
Part of The Public Shelf — free, no login, no catch.