The Sky over the Mornington Peninsula — September 2131
Highlights this month
- 1SatUranus in superior conjunction with the Sun — lost in the glare. (2:53am)
- 2SunMercury in superior conjunction with the Sun — lost in the glare. (9:39am)
- 11TueThe Moon passes Mars — 1.0° apart. (10:31pm)
- 15SatThe Moon passes Jupiter — 0.3° apart. (12:08am)
- 23SunSpring equinox.
- 25TueThe Moon passes Saturn — 2° apart. (3:20pm)
- 27ThuMars is stationary — begins retrograde (westward) motion. (3:45pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Sat 1 | 6:43am | 5:58pm | 11h 15m | 7:26pm | 5:15am |
| Mon 10 | 6:30am | 6:05pm | 11h 36m | 7:33pm | 5:02am |
| Thu 20 | 6:14am | 6:14pm | 12h 00m | 7:42pm | 4:46am |
| Sun 30 | 5:58am | 6:23pm | 12h 25m | 7:52pm | 4:29am |
Days lengthen by about 70 minutes over the month.
The Moon
- Full MoonFri 7, 6:26pm
- Last QuarterFri 14, 9:41am
- New MoonFri 21, 9:07pm
- First QuarterSun 30, 1:34am
Perigee 10 Sep (363,300 km) · Apogee 26 Sep (405,800 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Vir | −0.8 | 6:53am | 12:58pm | 7:04pm | Hidden |
| Venus | Vir | −3.7 | 7:09am | 1:20pm | 7:31pm | Hidden |
| Mars | Ari | −1.5 | 10:25pm | 3:46am | 9:03am | Morning |
| Jupiter | Tau | −2.0 | 1:57am | 6:42am | 11:27am | Morning |
| Saturn | Lib | 0.5 | 8:41am | 3:27pm | 10:12pm | Evening |
| Uranus | Leo | 5.6 | 5:55am | 11:28am | 5:02pm | Hidden |
| Neptune | Lib | 8.0 | 9:10am | 4:07pm | 11:04pm | Evening |
The solar system — September 2131
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 13 September 2026.