The Sky over the Mornington Peninsula — September 1977
Highlights this month
- 5MonMars and Jupiter in conjunction — 0.5° apart. (6:17am)
- 5MonMercury in inferior conjunction with the Sun — lost in the glare. (3:35pm)
- 7WedThe Moon passes Jupiter — 5° apart. (4:20pm)
- 14WedMercury is stationary — resumes direct (eastward) motion. (5:07am)
- 21WedMercury at greatest morning elongation (18° from the Sun, mag −0.4) — best morning apparition. (5:57pm)
- 23FriSpring equinox.
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Thu 1 | 6:43am | 5:58pm | 11h 15m | 7:26pm | 5:15am |
| Sat 10 | 6:29am | 6:06pm | 11h 37m | 7:33pm | 5:01am |
| Tue 20 | 6:13am | 6:14pm | 12h 01m | 7:42pm | 4:45am |
| Fri 30 | 5:58am | 6:23pm | 12h 25m | 7:52pm | 4:28am |
Days lengthen by about 70 minutes over the month.
The Moon
- Last QuarterTue 6, 12:38am
- New MoonTue 13, 7:24pm
- First QuarterTue 20, 4:14pm
- Full MoonTue 27, 6:19pm
Apogee 6 Sep (404,700 km) · Perigee 18 Sep (368,900 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Leo | 0.9 | 5:41am | 11:18am | 4:54pm | Hidden |
| Venus | Leo | −3.7 | 5:04am | 10:18am | 3:32pm | Hidden |
| Mars | Gem | 0.8 | 2:38am | 7:21am | 12:04pm | Morning |
| Jupiter | Gem | −2.0 | 2:17am | 7:01am | 11:45am | Morning |
| Saturn | Leo | 0.5 | 5:17am | 10:33am | 3:49pm | Hidden |
| Uranus | Lib | 5.6 | 8:23am | 3:11pm | 9:59pm | Evening |
| Neptune | Oph | 7.9 | 10:20am | 5:32pm | 12:49am | Evening |
The solar system — September 1977
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 23 August 2026.