| 9 December, 17:40 | New moon |
| 13 December | Geminid meteor shower peaks |
| 17 December | Mercury in superior conjunction |
| 20 December | Pluto in conjunction |
| 22 December, 06:08 | December solstice |
| 23 December | Jupiter in conjunction |
| 24 December, 01:16 | Full moon |
| 24 December | Mars at opposition |