Today’s moon phase and illumination.
Free to use, no sign-up required. Moon Phase is one of 198 tools built into Xenition, alongside a chat that can use them for you.
Shows today’s moon phase, how much of the disc is lit, the moon’s age, days until full moon and the approximate Islamic date. Useful for night photography, stargazing or tracking the lunar month.
Age is the time since a new moon on 6 January 2000 at 18:14 UTC, modulo a mean synodic month of 29.530588853 days. Illumination is (1 − cos(2π × age ÷ 29.53)) ÷ 2. Names follow age: New Moon to day 1, Waxing Crescent to 6.4, First Quarter to 8.4, Waxing Gibbous to 13.8, Full Moon to 15.8, Waning Gibbous to 21.1, Last Quarter to 23.1, Waning Crescent to 27.7, then New Moon. Full moon is day 14.77; the picture is lit on the right while waxing, as seen from the north.
At 00:00 UTC on 1 January 2026, the moon is 11.9 days old, 91% illuminated, named Waxing Gibbous, with 3 days to full.
The moon orbits Earth in 27.3 days, but Earth also moves around the sun, so the moon needs about two more days to line up with the sun again.
The tool uses the average month, but the real orbit is elliptical, so actual phases can fall hours from the mean.
You do not have to open Moon Phase to use it. Ask Xenition in plain language and it runs the right tool, then carries the answer into whatever you are working on — a document, a spreadsheet, a deck.