The Sky over the Mornington Peninsula — December 2025
Highlights this month
- 8MonThe Moon passes Jupiter — 4° apart. (4:19am)
- 8MonMercury at greatest morning elongation (21° from the Sun, mag −0.5) — best morning apparition. (7:58am)
- 11ThuNeptune is stationary — resumes direct (eastward) motion. (6:20am)
- 14SunGeminids meteor shower peaks (up to 150/hr). A 28% Moon washes out fainter meteors for part of the night.
- 22MonSummer solstice.
- 22MonUrsids meteor shower peaks (up to 10/hr). A thin 4% Moon leaves the sky dark.
- 27SatThe Moon passes Saturn — 4° apart. (11:11am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Mon 1 | 5:50am | 8:28pm | 14h 37m | 10:20pm | 3:58am |
| Wed 10 | 5:50am | 8:36pm | 14h 46m | 10:31pm | 3:55am |
| Sat 20 | 5:52am | 8:42pm | 14h 50m | 10:39pm | 3:56am |
| Wed 31 | 5:59am | 8:46pm | 14h 47m | 10:42pm | 4:03am |
Days lengthen by about 10 minutes over the month.
The Moon
- Full Moon SupermoonFri 5, 10:16am
- Last QuarterFri 12, 7:53am
- New MoonSat 20, 12:45pm
- First QuarterSun 28, 6:14am
Perigee 4 Dec (357,300 km) · Apogee 17 Dec (406,100 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sco | −0.5 | 4:45am | 11:53am | 7:02pm | Hidden |
| Venus | Oph | −3.8 | 5:31am | 12:51pm | 8:13pm | Hidden |
| Mars | Sgr | 1.3 | 6:17am | 1:43pm | 9:09pm | Hidden |
| Jupiter | Gem | −2.4 | 10:33pm | 3:27am | 8:16am | Morning |
| Saturn | Psc | 1.0 | 1:15pm | 7:30pm | 1:48am | Evening |
| Uranus | Tau | 5.6 | 6:30pm | 11:27pm | 4:28am | Evening |
| Neptune | Psc | 7.8 | 1:36pm | 7:43pm | 1:53am | 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 28% 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 4% Moon leaves the sky dark.
The solar system — December 2025
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 15 July 2026.