The Sky over the Mornington Peninsula — September 2166
Highlights this month
- 5FriThe Moon passes Saturn — 3° apart. (9:01pm)
- 10WedMercury at greatest evening elongation (27° from the Sun, mag 0.2) — best evening apparition. (1:22pm)
- 10WedMercury and Mars in conjunction — 3° apart. (7:10pm)
- 11ThuVenus in superior conjunction with the Sun — lost in the glare. (11:52pm)
- 16TueThe Moon passes Jupiter — 4° apart. (12:59am)
- 17WedSaturn is stationary — resumes direct (eastward) motion. (2:18pm)
- 23TueSpring equinox.
- 23TueMercury is stationary — begins retrograde (westward) motion. (3:45pm)
- 26FriThe Moon passes Mars — 5° apart. (7:27pm)
- 29MonJupiter is stationary — begins retrograde (westward) motion. (7:44pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Mon 1 | 6:42am | 5:58pm | 11h 16m | 7:26pm | 5:15am |
| Wed 10 | 6:29am | 6:06pm | 11h 37m | 7:34pm | 5:01am |
| Sat 20 | 6:13am | 6:15pm | 12h 01m | 7:43pm | 4:45am |
| Tue 30 | 5:57am | 6:23pm | 12h 26m | 7:53pm | 4:28am |
Days lengthen by about 70 minutes over the month.
The Moon
- First QuarterWed 3, 6:03am
- Full MoonWed 10, 10:04am
- Last QuarterWed 17, 12:13am
- New MoonWed 24, 5:51pm
Perigee 11 Sep (359,800 km) · Apogee 27 Sep (406,100 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Vir | 0.3 | 7:12am | 1:47pm | 8:23pm | Evening |
| Venus | Leo | −3.8 | 6:31am | 12:21pm | 6:12pm | Hidden |
| Mars | Vir | 1.7 | 7:29am | 1:54pm | 8:20pm | Evening |
| Jupiter | Tau | −2.2 | 12:29am | 5:20am | 10:12am | Morning |
| Saturn | Sgr | 0.3 | 12:22pm | 7:40pm | 3:02am | Evening |
| Uranus | Cap | 5.7 | 2:38pm | 9:39pm | 4:44am | Evening |
| Neptune | Cap | 7.8 | 2:27pm | 9:28pm | 4:32am | Evening |
The solar system — September 2166
Evening sky Morning sky Up much of the night Lost in the Sun’s glare
Open the full interactive orrery ↗ — fast-forward, pick any date, toggle the Moon and more.
Looking for an earlier month? Browse all past monthly guides →
Generated automatically from the MPAS sky engine on 6 October 2026.