301.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 22 Dec 2018 at 12:48 EDT (1,967 days ago) in Orion

302.

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 (1,968 days ago) in Taurus

303.

December solstice 21 December will be the shortest day of 2018 in the northern hemisphere. Fri, 21 Dec 2018 at 17:16 EDT (1,968 days ago) in Sagittarius

304.

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 (1,968 days ago) in Ophiuchus

305.

December Leonis Minorid meteor shower 2018 The December Leonis Minorid meteor shower reaches its peak. Thu, 20 Dec 2018 (1,969 days ago) in Leo Minor

306.

Venus at highest altitude in morning sky Venus is bright and well placed in the dawn sky. Tue, 18 Dec 2018 (1,971 days ago) in Libra

307.

Comae Berenicid meteor shower 2018 The Comae Berenicid meteor shower reaches its peak. Sun, 16 Dec 2018 (1,973 days ago) in Leo

308.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Sat, 15 Dec 2018 (1,974 days ago) in Orion

309.

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 (1,974 days ago) in Orion

310.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sat, 15 Dec 2018 at 10:27 EDT (1,974 days ago) in Scorpius

311.

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 (1,974 days ago) in Aquarius

312.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Fri, 14 Dec 2018 at 20:51 EDT (1,975 days ago) in Aquarius

313.

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 (1,975 days ago) in Aquarius

314.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Fri, 14 Dec 2018 (1,975 days ago) in Scorpius

315.

Geminid meteor shower 2018 The Geminid meteor shower reaches its peak. Fri, 14 Dec 2018 (1,975 days ago) in Gemini

316.

Comet 46P/Wirtanen passes perigee Comet 46P/Wirtanen makes its closest approach to the Earth. Thu, 13 Dec 2018 (1,976 days ago) in Taurus

317.

Comet 46P/Wirtanen reaches peak brightness Comet 46P/Wirtanen is forecast to reach the brightest point in its 2018 apparition. Thu, 13 Dec 2018 (1,976 days ago) in Taurus

318.

The Large Magellanic Cloud is well placed The Milky Way's dwarf companion, the Large Magellanic Cloud (LMC; mag 0.9), in Dorado culminates at around midnight local time. Wed, 12 Dec 2018 (1,977 days ago) in Dorado

319.

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. Wed, 12 Dec 2018 at 07:24 EDT (1,977 days ago) in Capricornus

320.

σ-Hydrid meteor shower 2018 The σ-Hydrid meteor shower reaches its peak. Wed, 12 Dec 2018 (1,977 days ago) in Hydra