The Sky over the Mornington Peninsula — January 1991
Highlights this month
- 1TueUranus in superior conjunction with the Sun — lost in the glare. (2:47am)
- 2WedMars is stationary — resumes direct (eastward) motion. (3:40am)
- 3ThuThe Moon passes Jupiter — 2° apart. (8:57am)
- 4FriMercury is stationary — resumes direct (eastward) motion. (5:23am)
- 4FriQuadrantids meteor shower peaks (up to 110/hr). A bright 84% Moon interferes badly this year.
- 5SatNeptune in superior conjunction with the Sun — lost in the glare. (2:17pm)
- 14MonMercury at greatest morning elongation (24° from the Sun, mag −0.2) — best morning apparition. (7:57pm)
- 18FriSaturn in superior conjunction with the Sun — lost in the glare. (6:50pm)
- 26SatThe Moon passes Mars — 2° apart. (1:11am)
- 29TueJupiter at opposition — closest and brightest of the year, up all night in Cancer (mag −2.5). (10:48am)
- 30WedThe Moon passes Jupiter — 2° apart. (2:32pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Mon 1 | 5:59am | 8:46pm | 14h 47m | 10:42pm | 4:04am |
| Wed 10 | 6:07am | 8:46pm | 14h 39m | 10:39pm | 4:14am |
| Sat 20 | 6:18am | 8:43pm | 14h 25m | 10:31pm | 4:29am |
| Wed 31 | 6:30am | 8:35pm | 14h 05m | 10:19pm | 4:47am |
Days shorten by about 42 minutes over the month.
The Moon
- Full Moon SupermoonTue 1, 5:38am
- Last QuarterTue 8, 5:34am
- New MoonWed 16, 10:50am
- First QuarterThu 24, 1:30am
- Full MoonWed 30, 5:09pm
Apogee 12 Jan (405,900 km) · Perigee 28 Jan (361,900 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sgr | −0.2 | 4:29am | 11:47am | 7:05pm | Hidden |
| Venus | Cap | −3.7 | 7:40am | 2:45pm | 9:49pm | Hidden |
| Mars | Tau | −0.5 | 4:39pm | 9:27pm | 2:18am | Evening |
| Jupiter | Cnc | −2.4 | 9:32pm | 2:38am | 7:39am | All night |
| Saturn | Sgr | 0.4 | 6:29am | 1:41pm | 8:53pm | Hidden |
| Uranus | Sgr | 5.8 | 5:08am | 12:30pm | 7:52pm | Hidden |
| Neptune | Sgr | 8.0 | 5:31am | 12:47pm | 8:03pm | Hidden |
Meteor showers
- Quadrantids — peaks 4 January, radiant in Boötes (up to 110/hr). Radiant stays below the horizon from Victoria — essentially a no-show this far south. A bright 84% Moon interferes badly this year.
The solar system — January 1991
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 19 August 2026.