Portal:Astronomy/Events/September 2010
| 1 September | Alpha Aurigids peak |
| 3 September, 12:00 | Mercury at inferior conjunction |
| 8 September, 04:00 | Moon at perigee |
| 8 September, 10:30 | New moon |
| 11 September, 13:00 | Moon occults Venus |
| 19 September, 17:00 | Mercury at greatest western elongation |
| 21 September, 08:00 | Moon at apogee |
| 21 September, 12:00 | Jupiter at opposition |
| 22 September, 01:00 | Uranus at opposition |
| 23 September, 03:10 | Earth southward equinox |
| 23 September, 09:19 | Full moon |