December 2023

1. Sun
2. Mon
3. Tue
4. Wed
5. Thu
6. Fri
7. Sat
13. 1 81%
14. 2 73%
15. 3 64%
16. 4 55%
17. 5 Last qtr
18. 6 36%
19. 7 27%
20. 8 19%
21. 9 12%
22. 10 6%
23. 11 2%
24. 12 New
25. 13 1%
26. 14 4%
27. 15 10%
28. 16 18%
29. 17 27%
30. 18 38%
31. 19 First qtr
32. 20 61%
33. 21 71%
34. 22 80%
35. 23 88%
36. 24 94%
37. 25 98%
38. 26 Full
39. 27 99%
40. 28 97%
41. 29 93%
42. 30 87%
43. 31 80%

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

Events in December 2023

1. Mon, Dec 49:31 AM

   Mercury at greatest elongation

   21° from the Sun in the evening sky, its best showing after sunset.

2. Mon, Dec 4

   Apogee

   The Moon's farthest point from Earth on this orbit: 404,300 km.

3. Tue, Dec 512:49 AM

   Last Quarter

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

4. Sat, Dec 99:24 AM

   Moon and Venus close together

   They pass 3.3° apart in the sky.

5. Tue, Dec 125:06 AM

   Moon and Mars close together

   They pass 3.5° apart in the sky.

6. Tue, Dec 126:32 PM

   New Moon

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

7. Thu, Dec 1412:47 AM

   Moon and Mercury close together

   They pass 4.4° apart in the sky.

8. Sat, Dec 16

   Perigee

   The Moon's closest point to Earth on this orbit: 367,900 km.

9. Sun, Dec 176:31 PM

   Moon and Saturn close together

   They pass 2.3° apart in the sky.

10. Tue, Dec 199:07 AM

    Moon and Neptune close together

    They pass 1.1° apart in the sky.

11. Tue, Dec 191:39 PM

    First Quarter

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

12. Thu, Dec 2110:27 PM

    December solstice

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

13. Fri, Dec 227:52 AM

    Moon and Jupiter close together

    They pass 2.4° apart in the sky.

14. Fri, Dec 221:46 PM

    Mercury at inferior conjunction

    Passes between Earth and the Sun and is lost in its glare.

15. Sat, Dec 238:32 AM

    Moon and Uranus close together

    They pass 2.6° apart in the sky.

16. Tue, Dec 267:33 PM

    Full Moon Cold Moon

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

17. Wed, Dec 277:30 PM

    Mercury and Mars close together

    They pass 3.6° apart in the sky.

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