The Sky over the Mornington Peninsula — September 2015
Highlights this month
- 1TueNeptune at opposition — closest and brightest of the year, up all night in Aquarius (mag 7.8). (1:33pm)
- 4FriMercury at greatest evening elongation (27° from the Sun, mag 0.2) — best evening apparition. (8:19pm)
- 5SatVenus is stationary — resumes direct (eastward) motion. (7:00pm)
- 10ThuThe Moon passes Venus — 3° apart. (5:09pm)
- 17ThuMercury is stationary — begins retrograde (westward) motion. (11:14pm)
- 19SatThe Moon passes Saturn — 3° apart. (1:30pm)
- 23WedSpring equinox.
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Tue 1 | 6:43am | 5:58pm | 11h 15m | 7:26pm | 5:15am |
| Thu 10 | 6:29am | 6:05pm | 11h 36m | 7:33pm | 5:02am |
| Sun 20 | 6:14am | 6:14pm | 12h 00m | 7:42pm | 4:46am |
| Wed 30 | 5:58am | 6:23pm | 12h 25m | 7:52pm | 4:29am |
Days lengthen by about 70 minutes over the month.
The Moon
- Last QuarterSat 5, 7:50pm
- New MoonSun 13, 4:43pm
- First QuarterMon 21, 7:06pm
- Full Moon SupermoonMon 28, 12:55pm
Apogee 14 Sep (406,200 km) · Perigee 28 Sep (356,700 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Vir | 0.6 | 7:04am | 1:36pm | 8:09pm | Evening |
| Venus | Cnc | −4.6 | 4:23am | 9:51am | 3:20pm | Morning |
| Mars | Leo | 1.8 | 5:16am | 10:31am | 3:46pm | Hidden |
| Jupiter | Leo | −1.5 | 5:52am | 11:23am | 4:55pm | Hidden |
| Saturn | Lib | 0.4 | 9:34am | 4:36pm | 11:39pm | Evening |
| Uranus | Psc | 5.8 | 8:16pm | 2:00am | 7:40am | Morning |
| Neptune | Aqr | 7.8 | 4:51pm | 11:23pm | 5:59am | All night |
The solar system — September 2015
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.
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Generated automatically from the MPAS sky engine on 15 July 2026.