The Sky over the Mornington Peninsula — December 2125
Highlights this month
- 5WedJupiter in superior conjunction with the Sun — lost in the glare. (9:39am)
- 9SunVenus in inferior conjunction with the Sun — lost in the glare. (2:30am)
- 14FriGeminids meteor shower peaks (up to 150/hr). A bright 86% Moon interferes badly this year.
- 22SatSummer solstice.
- 22SatUrsids meteor shower peaks (up to 10/hr). A thin 8% Moon leaves the sky dark.
- 25TueSaturn is stationary — begins retrograde (westward) motion. (5:59am)
- 26WedMercury in superior conjunction with the Sun — lost in the glare. (4:31pm)
- 29SatVenus is stationary — resumes direct (eastward) motion. (1:39am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Sat 1 | 5:50am | 8:27pm | 14h 37m | 10:19pm | 3:58am |
| Mon 10 | 5:50am | 8:35pm | 14h 46m | 10:30pm | 3:54am |
| Thu 20 | 5:52am | 8:42pm | 14h 50m | 10:39pm | 3:55am |
| Mon 31 | 5:59am | 8:46pm | 14h 47m | 10:42pm | 4:03am |
Days lengthen by about 11 minutes over the month.
The Moon
- First QuarterMon 3, 9:34am
- Full MoonTue 11, 6:53am
- Last QuarterTue 18, 4:26am
- New MoonTue 25, 6:53am
Apogee 3 Dec (404,700 km) · Perigee 16 Dec (369,500 km) · Apogee 31 Dec (404,900 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Oph | −0.9 | 5:24am | 12:48pm | 8:11pm | Hidden |
| Venus | Oph | −3.8 | 5:19am | 12:31pm | 7:42pm | Hidden |
| Mars | Cap | 1.0 | 9:45am | 4:48pm | 11:50pm | Evening |
| Jupiter | Oph | −1.6 | 5:23am | 12:40pm | 7:57pm | Hidden |
| Saturn | Leo | 0.7 | 1:10am | 6:46am | 12:22pm | Morning |
| Uranus | Cnc | 5.4 | 11:42pm | 4:51am | 9:56am | Morning |
| Neptune | Lib | 8.0 | 3:42am | 10:30am | 5:17pm | Hidden |
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 bright 86% Moon interferes badly this year.
- Ursids — peaks 22 December, radiant in Ursa Minor (up to 10/hr). A circumpolar northern shower whose radiant never rises from Victoria. A thin 8% Moon leaves the sky dark.
The solar system — December 2125
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 11 September 2026.