December 2171

1. Sun
2. Mon
3. Tue
4. Wed
5. Thu
6. Fri
7. Sat
8. 1 24%
9. 2 34%
10. 3 44%
11. 4 First qtr
12. 5 64%
13. 6 73%
14. 7 81%
15. 8 88%
16. 9 93%
17. 10 97%
18. 11 99%
19. 12 Full
20. 13 98%
21. 14 95%
22. 15 90%
23. 16 84%
24. 17 76%
25. 18 66%
26. 19 56%
27. 20 Last qtr
28. 21 34%
29. 22 24%
30. 23 15%
31. 24 7%
32. 25 2%
33. 26 New
34. 27 1%
35. 28 5%
36. 29 11%
37. 30 18%
38. 31 27%

• Moon phase
• Perigee or apogee
• Eclipse
• Planets
• Equinox or solstice

Events in December 2171

1. Mon, Dec 29:56 AM

   Moon and Neptune close together

   They pass 4.9° apart in the sky.

2. Tue, Dec 36:32 AM

   Moon and Uranus close together

   They pass 4.2° apart in the sky.

3. Wed, Dec 42:02 AM

   First Quarter

   Half of the disc is lit. The Moon is high at sunset and sets around midnight.

4. Wed, Dec 42:41 AM

   Moon and Saturn close together

   They pass 2.5° apart in the sky.

5. Tue, Dec 10

   Apogee

   The Moon's farthest point from Earth on this orbit: 406,200 km.

6. Thu, Dec 126:31 AM

   Full Moon Cold Moon

   The whole disc is lit. The Moon rises around sunset and stays up all night.

7. Fri, Dec 201:25 AM

   Last Quarter

   Half of the disc is lit. The Moon rises around midnight and is up through the morning.

8. Fri, Dec 209:00 PM

   Moon and Mars close together

   They pass 0.7° apart in the sky.

9. Sat, Dec 218:34 PM

   December solstice

   The shortest day in the northern hemisphere and the longest in the southern.

10. Mon, Dec 234:06 AM

    Moon and Jupiter close together

    They pass 1.2° apart in the sky.

11. Wed, Dec 25

    Perigee

    The Moon's closest point to Earth on this orbit: 359,300 km.

12. Thu, Dec 264:33 PM

    Moon and Mercury close together

    They pass 2.6° apart in the sky.

13. Thu, Dec 265:10 PM

    New Moon

    The Moon passes between Earth and the Sun and cannot be seen. These are the darkest nights of the month.

14. Fri, Dec 277:41 AM

    Mercury behind the Sun

    On the far side of the Sun and lost in its glare.

15. Sun, Dec 2912:28 PM

    Venus and Neptune close together

    They pass 1.6° apart in the sky.

16. Sun, Dec 298:41 PM

    Moon and Neptune close together

    They pass 4.8° apart in the sky.

17. Sun, Dec 298:49 PM

    Moon, Neptune, and Venus gathered

    All within 4.8° of each other in the sky.

18. Sun, Dec 299:25 PM

    Moon and Venus close together

    They pass 3.1° apart in the sky.

19. Mon, Dec 304:58 PM

    Moon and Uranus close together

    They pass 4.0° apart in the sky.

20. Tue, Dec 311:48 PM

    Moon and Saturn close together

    They pass 2.3° apart in the sky.

Times are local to America/New York. Each Moon is drawn as it looks at midday.