| December 2005 | |
|---|---|
| 1 December, 15:01 | New moon |
| 12 December, 12:41 | Mercury is at greatest western elongation |
| 14 December | Geminids meteor shower: up to 120 meteors per hour |
| 15 December, 16:16 | Full moon |
| 22 December | Ursids meteor shower: up to 10 meteors per hour |
| 31 December, 03:12 | New moon |