The Sky over the Mornington Peninsula — September 2103
Highlights this month
- 6ThuMercury at greatest morning elongation (18° from the Sun, mag −0.3) — best morning apparition. (2:17am)
- 12WedThe Moon passes Jupiter — 1.0° apart. (8:31am)
- 14FriJupiter is stationary — resumes direct (eastward) motion. (9:48am)
- 17MonNeptune in superior conjunction with the Sun — lost in the glare. (1:24pm)
- 24MonSpring equinox.
- 24MonThe Moon passes Mars — 0.6° apart. (2:09pm)
- 27ThuThe Moon passes Venus — 1° apart. (12:35pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Sat 1 | 6:43am | 5:58pm | 11h 14m | 7:25pm | 5:16am |
| Mon 10 | 6:30am | 6:05pm | 11h 35m | 7:33pm | 5:02am |
| Thu 20 | 6:14am | 6:14pm | 12h 00m | 7:42pm | 4:46am |
| Sun 30 | 5:58am | 6:23pm | 12h 24m | 7:52pm | 4:29am |
Days lengthen by about 70 minutes over the month.
The Moon
- New MoonSun 2, 1:56am
- First QuarterMon 10, 1:58am
- Full Moon SupermoonSun 16, 6:34pm
- Last QuarterSun 23, 2:23pm
Apogee 2 Sep (406,300 km) · Perigee 16 Sep (357,000 km) · Apogee 29 Sep (406,100 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Leo | −1.2 | 5:55am | 11:27am | 4:58pm | Hidden |
| Venus | Cnc | −4.5 | 4:06am | 9:19am | 2:32pm | Morning |
| Mars | Gem | 0.7 | 2:33am | 7:16am | 11:59am | Morning |
| Jupiter | Sgr | −2.2 | 12:41pm | 8:00pm | 3:23am | Evening |
| Saturn | Lib | 0.5 | 9:27am | 4:28pm | 11:28pm | Evening |
| Uranus | Ari | 5.7 | 9:46pm | 3:08am | 8:27am | Morning |
| Neptune | Leo | 8.0 | 6:34am | 12:24pm | 6:15pm | Hidden |
The solar system — September 2103
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 3 September 2026.