The Sky over the Mornington Peninsula — September 2173
Highlights this month
- 2ThuMercury at greatest evening elongation (27° from the Sun, mag 0.2) — best evening apparition. (7:17pm)
- 3FriUranus at opposition — closest and brightest of the year, up all night in Aquarius (mag 5.8). (12:30pm)
- 11SatThe Moon passes Venus — 0.5° apart. (9:25pm)
- 14TueVenus at greatest evening elongation (46° from the Sun, mag −4.4) — best evening apparition. (10:49pm)
- 15WedMercury is stationary — begins retrograde (westward) motion. (11:03pm)
- 22WedThe Moon passes Saturn — 3° apart. (7:40pm)
- 23ThuSpring equinox.
- 29WedMercury in inferior conjunction with the Sun — lost in the glare. (4:57am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Wed 1 | 6:42am | 5:59pm | 11h 17m | 7:26pm | 5:14am |
| Fri 10 | 6:28am | 6:06pm | 11h 38m | 7:34pm | 5:01am |
| Mon 20 | 6:13am | 6:15pm | 12h 02m | 7:43pm | 4:44am |
| Thu 30 | 5:57am | 6:24pm | 12h 27m | 7:53pm | 4:27am |
Days lengthen by about 70 minutes over the month.
The Moon
- New MoonTue 7, 7:30pm
- First QuarterWed 15, 9:54am
- Full MoonWed 22, 12:46am
- Last QuarterWed 29, 7:43am
Apogee 4 Sep (405,900 km) · Perigee 20 Sep (362,000 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Vir | 0.8 | 6:58am | 1:30pm | 8:02pm | Evening |
| Venus | Lib | −4.4 | 8:05am | 3:04pm | 10:05pm | Evening |
| Mars | Leo | 1.8 | 5:20am | 10:38am | 3:56pm | Hidden |
| Jupiter | Oph | −1.8 | 10:09am | 5:25pm | 12:44am | Evening |
| Saturn | Psc | 0.3 | 7:33pm | 1:32am | 7:26am | Morning |
| Uranus | Aqr | 5.8 | 5:01pm | 11:30pm | 6:02am | All night |
| Neptune | Cap | 7.8 | 3:44pm | 10:29pm | 5:19am | Evening |
The solar system — September 2173
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 8 October 2026.