The Moon on this date
Moon on Monday, December 31, 1917
Waning Gibbous
89.5% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- E
- Highest
- 63°
- Moonset
- W
60°30°
Horizon
8:48 PM
9:46 AM
63°
Key figures
- Illuminated
- 89.5%
- Age
- 17.3 days
- Distance
- 400,600 km
- Apparent size
- 29.8′
- Constellation
- Cancer
- Lunation number
- -62
Events on this date
-
Moon, Neptune, and Saturn gathered
All within 7.1° of each other in the sky.
-
Moon and Saturn close together
They pass 4.3° apart in the sky.
Exact values
For Dec 31, 12:00 PM, midday on this date.
| Elongation from the Sun | 217.77° |
|---|---|
| Phase angle | 37.84° |
| Illuminated fraction | 89.49% |
| Altitude / azimuth | -22.5° / 309.5° |
| Right ascension / declination | 9h 14m / 12.06° |
| Ecliptic longitude / latitude | 137.25° / -3.79° |
| Libration in longitude / latitude | 2.06° / 5.71° |
| Sub-solar longitude / latitude | -35.24° / 0.26° |
| Position angle of the axis | 16.2° |
| Position angle of the bright limb | 113.2° |
| Apparent magnitude | -11.7 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.