The Sky over the Mornington Peninsula — September 2120
Highlights this month
- 9MonMercury at greatest evening elongation (27° from the Sun, mag 0.2) — best evening apparition. (7:39am)
- 16MonThe Moon passes Saturn — 4° apart. (1:19am)
- 17TueThe Moon passes Mars — 1° apart. (8:20am)
- 17TueThe Moon passes Jupiter — 2° apart. (7:55pm)
- 22SunMercury is stationary — begins retrograde (westward) motion. (10:03am)
- 23MonSpring equinox.
- 26ThuThe Moon passes Venus — 5° apart. (10:43am)
- 30MonMars and Jupiter in conjunction — 0.8° apart. (12:25am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Sun 1 | 6:42am | 5:58pm | 11h 16m | 7:26pm | 5:14am |
| Tue 10 | 6:28am | 6:06pm | 11h 38m | 7:34pm | 5:01am |
| Fri 20 | 6:13am | 6:15pm | 12h 02m | 7:43pm | 4:45am |
| Mon 30 | 5:57am | 6:23pm | 12h 26m | 7:53pm | 4:28am |
Days lengthen by about 70 minutes over the month.
The Moon
- First QuarterSun 1, 10:49am
- Full MoonSun 8, 1:48am
- Last QuarterSun 15, 3:10am
- New MoonMon 23, 7:57am
- First QuarterMon 30, 6:40pm
Perigee 6 Sep (359,200 km) · Apogee 19 Sep (405,700 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Vir | 0.3 | 7:10am | 1:45pm | 8:21pm | Evening |
| Venus | Vir | −3.8 | 7:45am | 2:21pm | 8:56pm | Evening |
| Mars | Gem | 1.1 | 3:14am | 8:00am | 12:45pm | Morning |
| Jupiter | Gem | −1.8 | 3:36am | 8:27am | 1:18pm | Morning |
| Saturn | Gem | −0.0 | 2:09am | 6:57am | 11:44am | Morning |
| Uranus | Gem | 5.6 | 3:23am | 8:10am | 12:57pm | Morning |
| Neptune | Vir | 8.0 | 8:01am | 2:34pm | 9:07pm | Evening |
The solar system — September 2120
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 9 September 2026.