Waning · 42.8% lit · ♎︎ Libra 18°
Moon age
22.5days
Moon phase on December 31, 2026Waning Crescent
On Thursday, December 31, 2026, the Moon will be a Waning Crescent: 42.8% of its visible face lit, 22.5 days after the new moon and shrinking each night.
42.8%Illumination at noon UTC
22.5 dMoon age
388,904 km241,654 mi from Earth
♎︎ LibraMoon sign (18°)
30.7′Apparent size (arcmin)
WaningLit on the left (N. Hemisphere)
Nearest moon phases
The nearest full moon to December 31, 2026 is on Thursday, December 24, 2026 at 01:28 UTC, 7 days earlier, and the nearest new moon is on Thursday, January 7, 2027 at 20:25 UTC, 7 days later.
| Phase | Date | Time (UTC) |
|---|---|---|
| Last Quarter (before) | Wednesday, December 30, 2026 | 19:00 |
| New Moon (after) | Thursday, January 7, 2027 | 20:25 |
The Moon around December 31
More about this date
Thursday, December 31, 2026 falls in the lunar cycle that runs from the new moon of December 9, 2026 to the new moon of January 7, 2027, a cycle of 29.81 days.
- See every phase of the month in the moon phases in December 2026, or the whole moon calendar 2026.
- The same date one year apart: 2025 · 2027.
- Born on this day? The moon phase on your birthday tool adds your birth time and your moon sign.
- Phases change by time zone: this page uses Coordinated Universal Time (UTC). Learn how to read the phases of the moon.