Waning · 90.7% lit · ♌︎ Leo 14°
Moon age
17.1days
Moon phase on December 31, 1917Waning Gibbous
On Monday, December 31, 1917, the Moon was a Waning Gibbous: 90.7% of its visible face lit, 17.1 days after the new moon and shrinking each night.
90.7%Illumination at noon UTC
17.1 dMoon age
400,018 km248,560 mi from Earth
♌︎ LeoMoon sign (15°)
29.9′Apparent size (arcmin)
WaningLit on the left (N. Hemisphere)
Nearest moon phases
The nearest full moon to December 31, 1917 is on Friday, December 28, 1917 at 09:51 UTC, 3 days earlier, and the nearest new moon is on Saturday, January 12, 1918 at 22:35 UTC, 12 days later.
| Phase | Date | Time (UTC) |
|---|---|---|
| Full Moon (before) | Friday, December 28, 1917 | 09:51 |
| Last Quarter (after) | Saturday, January 5, 1918 | 11:49 |
The Moon around December 31
More about this date
Monday, December 31, 1917 falls in the lunar cycle that runs from the new moon of December 14, 1917 to the new moon of January 12, 1918, a cycle of 29.55 days.
- See every phase of the month in the moon phases in December 1917, or the whole moon calendar 1917.
- The same date one year apart: 1916 · 1918.
- 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.