The Sky over the Mornington Peninsula — September 1991
Highlights this month
- 8SunMercury at greatest morning elongation (18° from the Sun, mag −0.3) — best morning apparition. (3:35am)
- 12ThuVenus is stationary — resumes direct (eastward) motion. (12:11pm)
- 19ThuThe Moon passes Saturn — 2° apart. (12:33pm)
- 19ThuUranus is stationary — resumes direct (eastward) motion. (4:45pm)
- 23MonSpring equinox.
- 26ThuNeptune is stationary — resumes direct (eastward) motion. (9:07am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Sun 1 | 6:43am | 5:58pm | 11h 14m | 7:25pm | 5:15am |
| Tue 10 | 6:30am | 6:05pm | 11h 36m | 7:33pm | 5:02am |
| Fri 20 | 6:14am | 6:14pm | 12h 00m | 7:42pm | 4:46am |
| Mon 30 | 5:58am | 6:23pm | 12h 24m | 7:52pm | 4:29am |
Days lengthen by about 70 minutes over the month.
The Moon
- Last QuarterMon 2, 4:22am
- New MoonSun 8, 8:57pm
- First QuarterMon 16, 8:04am
- Full MoonTue 24, 8:47am
Perigee 6 Sep (364,700 km) · Apogee 18 Sep (404,900 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Leo | −1.0 | 5:51am | 11:21am | 4:51pm | Hidden |
| Venus | Leo | −4.5 | 4:35am | 10:11am | 3:47pm | Morning |
| Mars | Vir | 1.7 | 7:08am | 1:20pm | 7:32pm | Hidden |
| Jupiter | Leo | −1.6 | 5:34am | 10:58am | 4:21pm | Hidden |
| Saturn | Cap | 0.3 | 1:45pm | 8:56pm | 4:10am | Evening |
| Uranus | Sgr | 5.7 | 12:05pm | 7:27pm | 2:53am | Evening |
| Neptune | Sgr | 7.9 | 12:29pm | 7:45pm | 3:05am | Evening |
The solar system — September 1991
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 18 August 2026.