The Sky over the Mornington Peninsula — December 2166
Highlights this month
- 6SatThe Moon passes Jupiter — 3° apart. (9:59pm)
- 13SatMars in superior conjunction with the Sun — lost in the glare. (6:13pm)
- 14SunGeminids meteor shower peaks (up to 150/hr). A 51% Moon washes out fainter meteors for part of the night.
- 22MonSummer solstice.
- 22MonUrsids meteor shower peaks (up to 10/hr). A thin 0% Moon leaves the sky dark.
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Mon 1 | 5:50am | 8:27pm | 14h 37m | 10:19pm | 3:58am |
| Wed 10 | 5:50am | 8:35pm | 14h 46m | 10:30pm | 3:54am |
| Sat 20 | 5:52am | 8:42pm | 14h 50m | 10:39pm | 3:55am |
| Wed 31 | 5:59am | 8:46pm | 14h 47m | 10:41pm | 4:03am |
Days lengthen by about 11 minutes over the month.
The Moon
- First QuarterMon 1, 12:05am
- Full MoonSun 7, 2:52pm
- Last QuarterSun 14, 8:00pm
- New MoonTue 23, 12:08am
- First QuarterTue 30, 9:45am
Perigee 6 Dec (360,400 km) · Apogee 18 Dec (405,500 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sgr | −0.8 | 6:33am | 2:05pm | 9:38pm | Hidden |
| Venus | Sgr | −3.7 | 7:33am | 2:58pm | 10:23pm | Hidden |
| Mars | Oph | 1.3 | 5:48am | 1:12pm | 8:37pm | Hidden |
| Jupiter | Tau | −2.6 | 6:53pm | 11:49pm | 4:49am | Evening |
| Saturn | Sgr | 0.4 | 7:50am | 3:07pm | 10:23pm | Hidden |
| Uranus | Cap | 5.9 | 9:44am | 4:44pm | 11:44pm | Evening |
| Neptune | Cap | 7.9 | 9:31am | 4:32pm | 11:32pm | Evening |
Meteor showers
- Geminids — peaks 14 December, radiant in Gemini (up to 150/hr). The richest shower of the year; the radiant reaches a useful altitude after local midnight, so it rewards southern observers well. A 51% Moon washes out fainter meteors for part of the night.
- Ursids — peaks 22 December, radiant in Ursa Minor (up to 10/hr). A circumpolar northern shower whose radiant never rises from Victoria. A thin 0% Moon leaves the sky dark.
The solar system — December 2166
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.
Looking for an earlier month? Browse all past monthly guides →
Generated automatically from the MPAS sky engine on 6 October 2026.
