221.

Geminid meteor shower 2017 The Geminid meteor shower reaches its peak. Thu, 14 Dec 2017 (2,353 days ago) in Gemini

222.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°14'. Thu, 14 Dec 2017 at 09:26 EDT (2,353 days ago) in Libra

223.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 14 Dec 2017 at 11:56 EDT (2,353 days ago) in Libra

224.

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. Fri, 15 Dec 2017 (2,352 days ago) in Orion

225.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Fri, 15 Dec 2017 (2,352 days ago) in Orion

226.

Comae Berenicid meteor shower 2017 The Comae Berenicid meteor shower reaches its peak. Fri, 15 Dec 2017 (2,351 days ago) in Leo

227.

Asteroid 20 Massalia at opposition Asteroid 20 Massalia makes closest approach to the Earth. Fri, 15 Dec 2017 at 23:46 EDT (2,351 days ago) in Taurus

228.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 18 Dec 2017 at 01:31 EDT (2,349 days ago) in Sagittarius

229.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Mon, 18 Dec 2017 at 20:25 EDT (2,349 days ago) in Sagittarius

230.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Mon, 18 Dec 2017 at 21:39 EDT (2,349 days ago) in Sagittarius

231.

December Leonis Minorid meteor shower 2017 The December Leonis Minorid meteor shower reaches its peak. Tue, 19 Dec 2017 (2,348 days ago) in Leo Minor

232.

December solstice 21 December will be the shortest day of 2017 in the northern hemisphere. Thu, 21 Dec 2017 at 11:23 EDT (2,346 days ago) in Sagittarius

233.

Saturn at solar conjunction Saturn is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Thu, 21 Dec 2017 at 15:59 EDT (2,346 days ago) in Sagittarius

234.

Ursid meteor shower 2017 The Ursid meteor shower reaches its peak. Fri, 22 Dec 2017 (2,345 days ago) in Ursa Minor

235.

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, 26 Dec 2017 at 04:20 EDT (2,341 days ago) in Pisces

236.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Wed, 27 Dec 2017 at 18:29 EDT (2,340 days ago) in Ophiuchus

237.

The cluster NGC 2232 is well placed The open star cluster NGC 2232 (mag 4.2) in Monoceros culminates at around midnight local time. Thu, 28 Dec 2017 (2,339 days ago) in Monoceros

238.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Thu, 28 Dec 2017 (2,338 days ago) in Ophiuchus

239.

The Rosette Nebula is well placed The Rosette Nebula (C49; mag 9.0) in Monoceros culminates at around midnight local time. Fri, 29 Dec 2017 (2,338 days ago) in Monoceros

240.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Sat, 30 Dec 2017 at 16:03 EDT (2,337 days ago) in Taurus