The Sky over the Mornington Peninsula — September 2109
Highlights this month
- 6FriThe Moon passes Saturn — 4° apart. (1:26pm)
- 7SatMercury is stationary — resumes direct (eastward) motion. (12:16pm)
- 8SunUranus is stationary — begins retrograde (westward) motion. (1:01am)
- 15SunMercury at greatest morning elongation (18° from the Sun, mag −0.4) — best morning apparition. (6:34am)
- 23MonSpring equinox.
- 30MonNeptune in superior conjunction with the Sun — lost in the glare. (10:06am)
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 | 7:33pm | 5:01am |
| Fri 20 | 6:13am | 6:14pm | 12h 01m | 7:43pm | 4:45am |
| Mon 30 | 5:58am | 6:23pm | 12h 26m | 7:53pm | 4:28am |
Days lengthen by about 70 minutes over the month.
The Moon
- First QuarterMon 2, 11:36am
- Full MoonMon 9, 5:47pm
- Last QuarterTue 17, 8:39pm
- New MoonWed 25, 3:27am
Apogee 15 Sep (405,400 km) · Perigee 27 Sep (361,200 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Leo | −0.4 | 5:40am | 11:09am | 4:39pm | Hidden |
| Venus | Vir | −4.2 | 8:08am | 3:03pm | 9:59pm | Evening |
| Mars | Leo | 1.8 | 5:05am | 10:16am | 3:27pm | Hidden |
| Jupiter | Cnc | −1.6 | 4:52am | 10:01am | 3:09pm | Hidden |
| Saturn | Cap | 0.3 | 2:04pm | 9:12pm | 4:23am | Evening |
| Uranus | Tau | 5.7 | 11:50pm | 4:48am | 9:41am | Morning |
| Neptune | Vir | 8.0 | 7:03am | 1:09pm | 7:15pm | Hidden |
The solar system — September 2109
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 5 September 2026.