The Sky over the Mornington Peninsula — September 2161
Highlights this month
- 7MonMars at opposition — closest and brightest of the year, up all night in Aquarius (mag −2.9). (5:08am)
- 9WedMercury in inferior conjunction with the Sun — lost in the glare. (1:33pm)
- 18FriMercury is stationary — resumes direct (eastward) motion. (2:01am)
- 23WedSpring equinox.
- 23WedThe Moon passes Saturn — 3° apart. (6:47pm)
- 24ThuThe Moon passes Jupiter — 2° apart. (11:08pm)
- 25FriMercury at greatest morning elongation (18° from the Sun, mag −0.4) — best morning apparition. (2:31pm)
- 29TueUranus is stationary — resumes direct (eastward) motion. (9:16pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Tue 1 | 6:42am | 5:59pm | 11h 16m | 7:26pm | 5:14am |
| Thu 10 | 6:28am | 6:06pm | 11h 38m | 7:34pm | 5:01am |
| Sun 20 | 6:13am | 6:15pm | 12h 02m | 7:43pm | 4:45am |
| Wed 30 | 5:57am | 6:23pm | 12h 27m | 7:53pm | 4:28am |
Days lengthen by about 70 minutes over the month.
The Moon
- Full MoonSat 5, 3:12am
- Last QuarterSun 13, 6:33am
- New MoonSun 20, 1:31am
- First QuarterSat 26, 6:55pm
Apogee 7 Sep (406,200 km) · Perigee 20 Sep (356,700 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Leo | 2.7 | 5:48am | 11:33am | 5:18pm | Hidden |
| Venus | Leo | −3.7 | 5:42am | 11:10am | 4:37pm | Hidden |
| Mars | Aqr | −2.8 | 5:03pm | 11:44pm | 6:30am | All night |
| Jupiter | Oph | −1.8 | 9:55am | 5:08pm | 12:25am | Evening |
| Saturn | Lib | 0.5 | 8:57am | 3:49pm | 10:41pm | Evening |
| Uranus | Sgr | 5.7 | 12:53pm | 8:11pm | 3:32am | Evening |
| Neptune | Sgr | 7.8 | 1:31pm | 8:40pm | 3:54am | Evening |
The solar system — September 2161
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 2 October 2026.