The Sky over the Mornington Peninsula — December 2111
Highlights this month
- 1TueMercury at greatest morning elongation (20° from the Sun, mag −0.5) — best morning apparition. (8:04am)
- 1TueMars and Jupiter in conjunction — 0.0° apart. (2:24pm)
- 2WedUranus at opposition — closest and brightest of the year, up all night in Taurus (mag 5.6). (8:45am)
- 7MonThe Moon passes Saturn — 1° apart. (5:55am)
- 14MonGeminids meteor shower peaks (up to 150/hr). A bright 99% Moon interferes badly this year.
- 22TueSummer solstice.
- 22TueUrsids meteor shower peaks (up to 10/hr). A bright 62% Moon interferes badly this year.
- 25FriThe Moon passes Jupiter — 4° apart. (6:49pm)
- 26SatThe Moon passes Mars — 4° apart. (4:27pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Tue 1 | 5:51am | 8:26pm | 14h 36m | 10:19pm | 3:59am |
| Thu 10 | 5:50am | 8:35pm | 14h 45m | 10:30pm | 3:55am |
| Sun 20 | 5:52am | 8:42pm | 14h 50m | 10:38pm | 3:55am |
| Thu 31 | 5:58am | 8:46pm | 14h 48m | 10:42pm | 4:02am |
Days lengthen by about 12 minutes over the month.
The Moon
- New MoonTue 1, 3:33pm
- First QuarterTue 8, 9:48am
- Full MoonTue 15, 5:37pm
- Last QuarterWed 23, 10:19pm
- New MoonThu 31, 3:40am
Perigee 4 Dec (365,900 km) · Apogee 20 Dec (405,400 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sco | −0.6 | 4:55am | 12:08pm | 7:21pm | Hidden |
| Venus | Lib | −3.8 | 3:56am | 10:48am | 5:40pm | Hidden |
| Mars | Vir | 1.6 | 3:02am | 9:36am | 4:11pm | Morning |
| Jupiter | Vir | −1.6 | 2:47am | 9:13am | 3:39pm | Morning |
| Saturn | Aqr | 0.8 | 11:11am | 5:55pm | 12:43am | Evening |
| Uranus | Tau | 5.6 | 7:23pm | 12:17am | 5:06am | All night |
| Neptune | Vir | 7.9 | 2:25am | 8:39am | 2:53pm | Morning |
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 99% 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 62% Moon interferes badly this year.
The solar system — December 2111
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 September 2026.