Waning · 99.1% lit · ♋︎ Cancer 20°
Moon age
15.8days
Moon phase on December 31, 2039Waning Gibbous
On Saturday, December 31, 2039, the Moon will be a Waning Gibbous: 99.1% of its visible face lit, 15.8 days after the new moon and shrinking each night.
99.1%Illumination at noon UTC
15.8 dMoon age
405,316 km251,851 mi from Earth
♋︎ CancerMoon sign (20°)
29.5′Apparent size (arcmin)
WaningLit on the left (N. Hemisphere)
Nearest moon phases
The nearest full moon to December 31, 2039 is on Friday, December 30, 2039 at 12:38 UTC, 1 day earlier, and the nearest new moon is on Saturday, January 14, 2040 at 03:25 UTC, 14 days later.
| Phase | Date | Time (UTC) |
|---|---|---|
| Full Moon (before) | Friday, December 30, 2039 | 12:38 |
| Last Quarter (after) | Saturday, January 7, 2040 | 11:06 |
The Moon around December 31
More about this date
Saturday, December 31, 2039 falls in the lunar cycle that runs from the new moon of December 15, 2039 to the new moon of January 14, 2040, a cycle of 29.45 days.
- See every phase of the month in the moon phases in December 2039, or the whole moon calendar 2039.
- The same date one year apart: 2038 · 2040.
- 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.