261.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Thu, 28 Dec 2017 (2,332 days ago) in Ophiuchus

262.

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 (2,333 days ago) in Monoceros

263.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Wed, 27 Dec 2017 at 18:29 EDT (2,334 days ago) in Ophiuchus

264.

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 (2,335 days ago) in Pisces

265.

Ursid meteor shower 2017 The Ursid meteor shower reaches its peak. Fri, 22 Dec 2017 (2,339 days ago) in Ursa Minor

266.

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 (2,340 days ago) in Sagittarius

267.

December solstice 21 December will be the shortest day of 2017 in the northern hemisphere. Thu, 21 Dec 2017 at 11:23 EDT (2,340 days ago) in Sagittarius

268.

December Leonis Minorid meteor shower 2017 The December Leonis Minorid meteor shower reaches its peak. Tue, 19 Dec 2017 (2,342 days ago) in Leo Minor

269.

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 (2,343 days ago) in Sagittarius

270.

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 (2,343 days ago) in Sagittarius

271.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 18 Dec 2017 at 01:31 EDT (2,343 days ago) in Sagittarius

272.

Asteroid 20 Massalia at opposition Asteroid 20 Massalia makes closest approach to the Earth. Fri, 15 Dec 2017 at 23:46 EDT (2,345 days ago) in Taurus

273.

Comae Berenicid meteor shower 2017 The Comae Berenicid meteor shower reaches its peak. Fri, 15 Dec 2017 (2,345 days ago) in Leo

274.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Fri, 15 Dec 2017 (2,346 days ago) in Orion

275.

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 (2,346 days ago) in Orion

276.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 14 Dec 2017 at 11:56 EDT (2,347 days ago) in Libra

277.

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 (2,347 days ago) in Libra

278.

Geminid meteor shower 2017 The Geminid meteor shower reaches its peak. Thu, 14 Dec 2017 (2,347 days ago) in Gemini

279.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Wed, 13 Dec 2017 at 14:12 EDT (2,348 days ago) in Virgo

280.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 4°09'. Wed, 13 Dec 2017 at 11:27 EDT (2,348 days ago) in Virgo