The Sky over the Mornington Peninsula — September 1989
Highlights this month
- 3SunThe Moon passes Mercury — 0.5° apart. (1:30am)
- 4MonThe Moon passes Venus — 4° apart. (3:05am)
- 10SunUranus is stationary — resumes direct (eastward) motion. (9:48am)
- 10SunThe Moon passes Saturn — 4° apart. (1:26pm)
- 11MonSaturn is stationary — resumes direct (eastward) motion. (12:54pm)
- 11MonMercury is stationary — begins retrograde (westward) motion. (11:56pm)
- 21ThuNeptune is stationary — resumes direct (eastward) motion. (10:48am)
- 23SatThe Moon passes Jupiter — 4° apart. (5:59am)
- 23SatSpring equinox.
- 25MonMercury in inferior conjunction with the Sun — lost in the glare. (8:05am)
- 30SatMars in superior conjunction with the Sun — lost in the glare. (5:43am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Fri 1 | 6:42am | 5:58pm | 11h 15m | 7:26pm | 5:15am |
| Sun 10 | 6:29am | 6:06pm | 11h 37m | 7:33pm | 5:01am |
| Wed 20 | 6:13am | 6:14pm | 12h 01m | 7:42pm | 4:45am |
| Sat 30 | 5:57am | 6:23pm | 12h 26m | 7:53pm | 4:28am |
Days lengthen by about 70 minutes over the month.
The Moon
- First QuarterFri 8, 7:51pm
- Full MoonFri 15, 9:54pm
- Last QuarterFri 22, 12:07pm
- New MoonSat 30, 7:51am
Apogee 4 Sep (405,800 km) · Perigee 17 Sep (358,800 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Vir | 1.4 | 6:48am | 1:14pm | 7:40pm | Hidden |
| Venus | Vir | −3.9 | 8:00am | 2:46pm | 9:32pm | Evening |
| Mars | Vir | 1.7 | 6:38am | 12:35pm | 6:31pm | Hidden |
| Jupiter | Gem | −1.9 | 2:34am | 7:19am | 12:03pm | Morning |
| Saturn | Sgr | 0.3 | 11:55am | 7:14pm | 2:38am | Evening |
| Uranus | Sgr | 5.7 | 11:25am | 6:49pm | 2:16am | Evening |
| Neptune | Sgr | 7.9 | 12:07pm | 7:24pm | 2:45am | Evening |
The solar system — September 1989
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 19 August 2026.