The Sky over the Mornington Peninsula — July 1991
Highlights this month
- 4ThuUranus at opposition — closest and brightest of the year, up all night in Sagittarius (mag 5.6). (4:44pm)
- 8MonNeptune at opposition — closest and brightest of the year, up all night in Sagittarius (mag 7.8). (10:14am)
- 13SatThe Moon passes Mercury — 3° apart. (9:50pm)
- 14SunThe Moon passes Jupiter — 3° apart. (1:22am)
- 14SunThe Moon passes Mars — 5° apart. (9:39pm)
- 15MonThe Moon passes Venus — 3° apart. (2:21am)
- 15MonMercury and Jupiter in conjunction — 0.1° apart. (5:05pm)
- 25ThuMercury at greatest evening elongation (27° from the Sun, mag 0.4) — best evening apparition. (12:02pm)
- 27SatThe Moon passes Saturn — 2° apart. (4:39am)
- 27SatSaturn at opposition — closest and brightest of the year, up all night in Capricornus (mag 0.0). (10:21am)
- 30TueSouthern Delta Aquariids meteor shower peaks (up to 25/hr). A bright 89% Moon interferes badly this year.
- 30TueAlpha Capricornids meteor shower peaks (up to 5/hr). A bright 89% Moon interferes badly this year.
- 30TueVenus is stationary — begins retrograde (westward) motion. (2:47pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Mon 1 | 7:37am | 5:10pm | 9h 32m | 6:44pm | 6:03am |
| Wed 10 | 7:36am | 5:14pm | 9h 39m | 6:49pm | 6:02am |
| Sat 20 | 7:31am | 5:21pm | 9h 50m | 6:54pm | 5:58am |
| Wed 31 | 7:23am | 5:30pm | 10h 07m | 7:01pm | 5:51am |
Days lengthen by about 35 minutes over the month.
The Moon
- Last QuarterFri 5, 12:58pm
- New MoonFri 12, 5:08am
- First QuarterFri 19, 1:09am
- Full MoonSat 27, 4:28am
Perigee 11 Jul (356,900 km) · Apogee 24 Jul (406,100 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Cnc | 0.0 | 8:59am | 2:09pm | 7:19pm | Evening |
| Venus | Leo | −4.6 | 9:34am | 3:05pm | 8:37pm | Evening |
| Mars | Leo | 1.8 | 9:37am | 2:59pm | 8:21pm | Evening |
| Jupiter | Cnc | −1.6 | 9:01am | 2:09pm | 7:18pm | Evening |
| Saturn | Cap | 0.1 | 6:08pm | 1:19am | 8:26am | Morning |
| Uranus | Sgr | 5.6 | 4:16pm | 11:38pm | 7:03am | All night |
| Neptune | Sgr | 7.8 | 4:38pm | 11:58pm | 7:13am | All night |
Meteor showers
- Southern Delta Aquariids — peaks 30 July, radiant in Aquarius (up to 25/hr). A favourite southern shower with a high radiant — steady rates through the small hours; overlaps the Alpha Capricornids. A bright 89% Moon interferes badly this year.
- Alpha Capricornids — peaks 30 July, radiant in Capricornus (up to 5/hr). Low rates but noted for slow, bright fireballs; radiant well placed from the south. A bright 89% Moon interferes badly this year.
The solar system — July 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.