321.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 1°52'. Wed, 05 Dec 2018 at 16:07 EDT (2,030 days ago) in Libra

322.

December φ-Cassiopeid meteor shower 2018 The December φ-Cassiopeid meteor shower reaches its peak. Thu, 06 Dec 2018 (2,029 days ago) in Andromeda

323.

New Moon The Moon disappears into the Sun's glare for a few days. Fri, 07 Dec 2018 at 02:21 EDT (2,028 days ago) in Ophiuchus

324.

Puppid-Velid meteor shower 2018 The Puppid-Velid meteor shower reaches its peak. Fri, 07 Dec 2018 (2,028 days ago) in Vela

325.

Close approach of Mars and Neptune Mars and Neptune pass within 2'08" of each other. Fri, 07 Dec 2018 at 09:07 EDT (2,028 days ago) in Aquarius

326.

Conjunction of Mars and Neptune Mars and Neptune share the same right ascension, at a separation of 2'21". Fri, 07 Dec 2018 at 09:45 EDT (2,028 days ago) in Aquarius

327.

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. Sat, 08 Dec 2018 at 13:40 EDT (2,027 days ago) in Sagittarius

328.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 1°07'. Sun, 09 Dec 2018 at 00:17 EDT (2,026 days ago) in Sagittarius

329.

Monocerotid meteor shower 2018 The Monocerotid meteor shower reaches its peak. Sun, 09 Dec 2018 (2,026 days ago) in Monoceros

330.

Comet 46P/Wirtanen passes perihelion Comet 46P/Wirtanen makes its closest approach to the Sun. Tue, 11 Dec 2018 (2,024 days ago) in Taurus

331.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 11 Dec 2018 at 07:38 EDT (2,024 days ago) in Libra

332.

σ-Hydrid meteor shower 2018 The σ-Hydrid meteor shower reaches its peak. Wed, 12 Dec 2018 (2,023 days ago) in Hydra

333.

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 (2,023 days ago) in Capricornus

334.

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 (2,023 days ago) in Dorado

335.

Venus at highest altitude in morning sky Venus is bright and well placed in the dawn sky. Thu, 13 Dec 2018 (2,022 days ago) in Libra

336.

Comet 46P/Wirtanen reaches peak brightness Comet 46P/Wirtanen is forecast to reach the brightest point in its 2018 apparition. Thu, 13 Dec 2018 (2,022 days ago) in Taurus

337.

Comet 46P/Wirtanen passes perigee Comet 46P/Wirtanen makes its closest approach to the Earth. Thu, 13 Dec 2018 (2,022 days ago) in Taurus

338.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Thu, 13 Dec 2018 (2,022 days ago) in Scorpius

339.

Geminid meteor shower 2018 The Geminid meteor shower reaches its peak. Fri, 14 Dec 2018 (2,021 days ago) in Gemini

340.

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 (2,021 days ago) in Aquarius