221.

Close approach of Venus and M44 Venus and M44 pass close to each other. Sun, 31 Aug 2025 at 23:50 EDT (320 days ago) in Cancer

222.

The Moon at aphelion The Moon passes its furthest point from the Sun, a monthly occurrence around the time of full moon. Fri, 05 Sep 2025 at 05:32 EDT (315 days ago) in Capricornus

223.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Sat, 06 Sep 2025 at 01:17 EDT (314 days ago) in Taurus

224.

Full Moon The Moon reaches full phase and is visible for much of the night. Sun, 07 Sep 2025 at 14:08 EDT (313 days ago) in Aquarius

225.

Total lunar eclipse There will be an eclipse of the Moon, visible from Antarctica, Asia, Russia, Africa, Oceania and Europe. Sun, 07 Sep 2025 at 14:11 EDT (313 days ago) in Aquarius

226.

Close approach of the Moon, Saturn and Neptune The Moon, Saturn and Neptune pass close to one another. Mon, 08 Sep 2025 at 13:11 EDT (312 days ago) in Pisces

227.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°59'. Mon, 08 Sep 2025 at 16:20 EDT (312 days ago) in Pisces

228.

September ε-Perseid meteor shower 2025 The September ε-Perseid meteor shower reaches its peak. Tue, 09 Sep 2025 (311 days ago) in Perseus

229.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, appearing larger than at other times of the month – though only very fractionally. Wed, 10 Sep 2025 at 08:09 EDT (310 days ago) in Pisces

230.

Comet C/2025 R2 (SWAN) passes perihelion Comet C/2025 R2 (SWAN) makes its closest approach to the Sun. Fri, 12 Sep 2025 (308 days ago) in Virgo

231.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Fri, 12 Sep 2025 at 18:10 EDT (308 days ago) in Taurus

232.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Sat, 13 Sep 2025 at 07:00 EDT (307 days ago) in Leo

233.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Sun, 14 Sep 2025 at 06:33 EDT (306 days ago) in Taurus

234.

Lunar occultation of Beta Tauri The Moon will pass in front of Beta Tauri (Elnath), creating a lunar occultation visible from countries and territories including Mexico, the Contiguous United States, French Polynesia and Kiribati amongst others. Sun, 14 Sep 2025 at 08:21 EDT (306 days ago) in Taurus

235.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°33'. Tue, 16 Sep 2025 at 07:05 EDT (304 days ago) in Gemini

236.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Tue, 16 Sep 2025 at 08:42 EDT (304 days ago) in Gemini

237.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 48'. Fri, 19 Sep 2025 at 07:46 EDT (301 days ago) in Leo

238.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Fri, 19 Sep 2025 at 08:30 EDT (301 days ago) in Leo

239.

Lunar occultation of Venus The Moon will pass in front of Venus, creating a lunar occultation visible from parts of Africa, Asia, Europe, Canada, Greenland, Russia, Corsica, Guernsey, Svalbard, Menorca, Mallorca, Ibiza, Isla de Alborán, Melilla, Islas Chafarinas, Shetland, Orkney, Northern Ireland and RAF Akrotiri. Fri, 19 Sep 2025 at 08:30 EDT (301 days ago) in Leo

240.

Saturn at opposition Saturn is optimally positioned for observation, appearing at its closest, brightest and largest. Sun, 21 Sep 2025 at 01:37 EDT (299 days ago) in Pisces