241.

Asteroid 5 Astraea at opposition Asteroid 5 Astraea makes closest approach to the Earth. Wed, 27 Dec 2023 at 21:22 EDT (186 days ago) in Orion

242.

Full Moon The Moon reaches full phase and is visible for much of the night. Tue, 26 Dec 2023 at 19:33 EDT (187 days ago) in Auriga

243.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Tue, 26 Dec 2023 at 14:55 EDT (187 days ago) in Auriga

244.

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 Argentina, Brazil, Uruguay and Falkland Islands amongst others. Mon, 25 Dec 2023 at 21:08 EDT (188 days ago) in Taurus

245.

Comet 62P/Tsuchinshan passes perihelion Comet 62P/Tsuchinshan makes its closest approach to the Sun. Mon, 25 Dec 2023 (188 days ago) in Leo

246.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Sun, 24 Dec 2023 at 03:56 EDT (189 days ago) in Taurus

247.

Ursid meteor shower 2023 The Ursid meteor shower reaches its peak. Fri, 22 Dec 2023 (190 days ago) in Ursa Minor

248.

Asteroid 9 Metis at opposition Asteroid 9 Metis makes closest approach to the Earth. Fri, 22 Dec 2023 at 14:10 EDT (191 days ago) in Gemini

249.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Fri, 22 Dec 2023 at 13:50 EDT (191 days ago) in Sagittarius

250.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 2°36'. Fri, 22 Dec 2023 at 09:24 EDT (191 days ago) in Aries

251.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 22 Dec 2023 at 07:31 EDT (191 days ago) in Aries

252.

December solstice 22 December will be the shortest day of 2023 in the northern hemisphere. Thu, 21 Dec 2023 at 22:24 EDT (192 days ago) in Sagittarius

253.

Asteroid 4 Vesta at opposition Asteroid 4 Vesta makes closest approach to the Earth. Thu, 21 Dec 2023 at 16:34 EDT (192 days ago) in Orion

254.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Wed, 20 Dec 2023 at 12:04 EDT (193 days ago) in Sagittarius

255.

December Leonis Minorid meteor shower 2023 The December Leonis Minorid meteor shower reaches its peak. Wed, 20 Dec 2023 (193 days ago) in Leo Minor

256.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Tue, 19 Dec 2023 at 13:39 EDT (194 days ago) in Pisces

257.

Lunar occultation of Neptune The Moon will pass in front of Neptune, creating a lunar occultation visible from Australia. Tue, 19 Dec 2023 at 09:16 EDT (194 days ago) in Pisces

258.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Sun, 17 Dec 2023 at 18:44 EDT (196 days ago) in Aquarius

259.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°28'. Sun, 17 Dec 2023 at 17:01 EDT (196 days ago) in Aquarius

260.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Sat, 16 Dec 2023 at 13:52 EDT (197 days ago) in Capricornus