241.

Venus at highest altitude in morning sky Venus is bright and well placed in the dawn sky. Thu, 13 Dec 2018 (1,971 days ago) in Libra

242.

Comet 46P/Wirtanen reaches peak brightness Comet 46P/Wirtanen is forecast to reach the brightest point in its 2018 apparition. Thu, 13 Dec 2018 (1,971 days ago) in Taurus

243.

Comet 46P/Wirtanen passes perigee Comet 46P/Wirtanen makes its closest approach to the Earth. Thu, 13 Dec 2018 (1,971 days ago) in Taurus

244.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Thu, 13 Dec 2018 (1,971 days ago) in Scorpius

245.

Geminid meteor shower 2018 The Geminid meteor shower reaches its peak. Fri, 14 Dec 2018 (1,970 days ago) in Gemini

246.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°33'. Fri, 14 Dec 2018 at 18:21 EDT (1,970 days ago) in Aquarius

247.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Fri, 14 Dec 2018 at 20:51 EDT (1,970 days ago) in Aquarius

248.

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. Sat, 15 Dec 2018 at 06:49 EDT (1,969 days ago) in Aquarius

249.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sat, 15 Dec 2018 at 10:27 EDT (1,969 days ago) in Scorpius

250.

The Running Man cluster is well placed The Running Man cluster NGC 1977 (mag 4.2) in Orion's sword culminates at around midnight local time. Sat, 15 Dec 2018 (1,969 days ago) in Orion

251.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Sat, 15 Dec 2018 (1,969 days ago) in Orion

252.

Comae Berenicid meteor shower 2018 The Comae Berenicid meteor shower reaches its peak. Sun, 16 Dec 2018 (1,968 days ago) in Leo

253.

December Leonis Minorid meteor shower 2018 The December Leonis Minorid meteor shower reaches its peak. Thu, 20 Dec 2018 (1,964 days ago) in Leo Minor

254.

Conjunction of Jupiter and Mercury Jupiter and Mercury share the same right ascension, at a separation of 52'. Fri, 21 Dec 2018 at 09:40 EDT (1,963 days ago) in Ophiuchus

255.

December solstice 21 December will be the shortest day of 2018 in the northern hemisphere. Fri, 21 Dec 2018 at 17:16 EDT (1,963 days ago) in Sagittarius

256.

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. Fri, 21 Dec 2018 at 21:21 EDT (1,963 days ago) in Taurus

257.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 22 Dec 2018 at 12:48 EDT (1,962 days ago) in Orion

258.

Ursid meteor shower 2018 The Ursid meteor shower reaches its peak. Sat, 22 Dec 2018 (1,962 days ago) in Ursa Minor

259.

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. Mon, 24 Dec 2018 at 04:49 EDT (1,960 days ago) in Gemini

260.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Tue, 25 Dec 2018 at 00:17 EDT (1,959 days ago) in Cancer