The Sky over the Mornington Peninsula — December 2135
Highlights this month
- 2FriMercury at greatest evening elongation (22° from the Sun, mag −0.4) — best evening apparition. (8:21pm)
- 11SunMercury is stationary — begins retrograde (westward) motion. (5:10pm)
- 14WedGeminids meteor shower peaks (up to 150/hr). A bright 67% Moon interferes badly this year.
- 20TueMars is stationary — begins retrograde (westward) motion. (10:02am)
- 21WedMercury in inferior conjunction with the Sun — lost in the glare. (9:10am)
- 22ThuSummer solstice.
- 22ThuUrsids meteor shower peaks (up to 10/hr). A bright 97% Moon interferes badly this year.
- 24SatThe Moon passes Mars — 0.9° apart. (8:01pm)
- 27TueSaturn in superior conjunction with the Sun — lost in the glare. (1:17am)
- 30FriThe Moon passes Jupiter — 3° apart. (6:14am)
- 31SatMercury is stationary — resumes direct (eastward) motion. (2:42pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Thu 1 | 5:50am | 8:27pm | 14h 36m | 10:19pm | 3:59am |
| Sat 10 | 5:50am | 8:35pm | 14h 45m | 10:30pm | 3:55am |
| Tue 20 | 5:52am | 8:42pm | 14h 50m | 10:38pm | 3:55am |
| Sat 31 | 5:58am | 8:46pm | 14h 47m | 10:42pm | 4:02am |
Days lengthen by about 11 minutes over the month.
The Moon
- New MoonMon 5, 3:42pm
- First QuarterMon 12, 7:56pm
- Full MoonWed 21, 12:47am
- Last QuarterWed 28, 9:54am
Perigee 4 Dec (360,300 km) · Apogee 16 Dec (405,500 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sgr | 1.6 | 6:48am | 2:09pm | 9:28pm | Hidden |
| Venus | Lib | −3.8 | 4:00am | 10:54am | 5:48pm | Hidden |
| Mars | Cnc | −0.4 | 12:09am | 5:10am | 10:12am | Morning |
| Jupiter | Vir | −1.6 | 3:04am | 9:39am | 4:14pm | Morning |
| Saturn | Sgr | 0.4 | 6:40am | 1:59pm | 9:18pm | Hidden |
| Uranus | Vir | 5.5 | 1:52am | 7:53am | 1:54pm | Morning |
| Neptune | Sco | 8.0 | 4:50am | 11:56am | 7:03pm | 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 67% 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 bright 97% Moon interferes badly this year.
The solar system — December 2135
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 14 September 2026.