The Sky over the Mornington Peninsula — September 2189
Highlights this month
- 1TueThe Moon passes Jupiter — 0.9° apart. (2:34am)
- 4FriJupiter is stationary — begins retrograde (westward) motion. (12:35am)
- 8TueVenus and Saturn in conjunction — 5° apart. (6:33pm)
- 10ThuVenus at greatest evening elongation (46° from the Sun, mag −4.4) — best evening apparition. (1:26am)
- 17ThuThe Moon passes Mars — 4° apart. (12:14am)
- 22TueMercury in superior conjunction with the Sun — lost in the glare. (10:47am)
- 22TueSpring equinox.
- 24ThuNeptune at opposition — closest and brightest of the year, up all night in Pisces (mag 7.8). (4:21am)
- 28MonThe Moon passes Jupiter — 3° apart. (5:30am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Tue 1 | 6:42am | 5:59pm | 11h 17m | 7:27pm | 5:14am |
| Thu 10 | 6:28am | 6:06pm | 11h 38m | 7:34pm | 5:00am |
| Sun 20 | 6:12am | 6:15pm | 12h 03m | 7:43pm | 4:44am |
| Wed 30 | 5:57am | 6:24pm | 12h 27m | 7:53pm | 4:27am |
Days lengthen by about 70 minutes over the month.
The Moon
- Last QuarterThu 3, 8:53am
- New MoonFri 11, 12:01am
- First QuarterThu 17, 6:21pm
- Full MoonThu 24, 11:50pm
Apogee 2 Sep (404,800 km) · Perigee 14 Sep (366,700 km) · Apogee 30 Sep (405,300 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Leo | −1.5 | 6:14am | 11:55am | 5:37pm | Hidden |
| Venus | Lib | −4.4 | 8:03am | 3:03pm | 10:04pm | Evening |
| Mars | Oph | 0.2 | 10:11am | 5:40pm | 1:09am | Evening |
| Jupiter | Ari | −2.5 | 10:17pm | 3:34am | 8:48am | Morning |
| Saturn | Vir | 0.6 | 8:14am | 2:50pm | 9:25pm | Evening |
| Uranus | Ari | 5.7 | 10:29pm | 3:41am | 8:49am | Morning |
| Neptune | Psc | 7.8 | 6:43pm | 12:51am | 6:55am | All night |
The solar system — September 2189
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 20 October 2026.