Portal:Astronomy/Events/December 2015
| 5 December, 15:00 | Moon at apogee |
| 6 December, 02:42 | Moon occults Mars |
| 7 December, 16:56 | Moon occults Venus |
| 11 December, 10:29 | New moon |
| 14 December, 15:00 | Geminids peak |
| 21 December, 09:09 | Moon at perigee |
| 22 December, 04:48 | Earth southern solstice |
| 23 December, 09:00 | Ursids peak |
| 25 December, 11:12 | Full moon |
| 29 December, 03:12 | Mercury at greatest eastern elongation |