The Sky over the Mornington Peninsula — September 2171
Highlights this month
- 3TueThe Moon passes Jupiter — 2° apart. (6:30pm)
- 8SunSaturn at opposition — closest and brightest of the year, up all night in Aquarius (mag 0.4). (10:51am)
- 14SatThe Moon passes Saturn — 1° apart. (5:28am)
- 23MonSpring equinox.
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Sun 1 | 6:43am | 5:58pm | 11h 15m | 7:26pm | 5:15am |
| Tue 10 | 6:29am | 6:06pm | 11h 37m | 7:34pm | 5:01am |
| Fri 20 | 6:13am | 6:14pm | 12h 01m | 7:43pm | 4:45am |
| Mon 30 | 5:58am | 6:23pm | 12h 25m | 7:53pm | 4:28am |
Days lengthen by about 70 minutes over the month.
The Moon
- First QuarterSat 7, 10:18am
- Full MoonSat 14, 4:35pm
- Last QuarterSun 22, 8:18pm
- New MoonMon 30, 1:57am
Perigee 4 Sep (366,100 km) · Apogee 19 Sep (405,400 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Vir | −0.4 | 7:05am | 1:21pm | 7:37pm | Hidden |
| Venus | Vir | −3.7 | 7:15am | 1:30pm | 7:46pm | Hidden |
| Mars | Cnc | 1.7 | 4:45am | 9:49am | 2:53pm | Hidden |
| Jupiter | Vir | −1.5 | 7:39am | 2:04pm | 8:30pm | Evening |
| Saturn | Aqr | 0.5 | 5:22pm | 11:49pm | 6:21am | All night |
| Uranus | Aqr | 5.8 | 4:22pm | 11:01pm | 5:43am | Evening |
| Neptune | Cap | 7.8 | 3:23pm | 10:14pm | 5:08am | Evening |
The solar system — September 2171
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 7 October 2026.