1.

New Moon The Moon disappears into the Sun's glare for a few days. Fri, 07 Dec 2018 at 02:21 EDT (1,966 days ago) in Ophiuchus

2.

Puppid-Velid meteor shower 2018 The Puppid-Velid meteor shower reaches its peak. Fri, 07 Dec 2018 (1,966 days ago) in Vela

3.

Close approach of Mars and Neptune Mars and Neptune pass within 2'08" of each other. Fri, 07 Dec 2018 at 09:07 EDT (1,966 days ago) in Aquarius

4.

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 (1,966 days ago) in Aquarius

5.

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 (1,965 days ago) in Sagittarius

6.

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 (1,964 days ago) in Sagittarius

7.

Monocerotid meteor shower 2018 The Monocerotid meteor shower reaches its peak. Sun, 09 Dec 2018 (1,964 days ago) in Monoceros

8.

Comet 46P/Wirtanen passes perihelion Comet 46P/Wirtanen makes its closest approach to the Sun. Tue, 11 Dec 2018 (1,962 days ago) in Taurus

9.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 11 Dec 2018 at 07:38 EDT (1,962 days ago) in Libra

10.

σ-Hydrid meteor shower 2018 The σ-Hydrid meteor shower reaches its peak. Wed, 12 Dec 2018 (1,961 days ago) in Hydra

11.

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 (1,961 days ago) in Capricornus

12.

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 (1,961 days ago) in Dorado

13.

Venus at highest altitude in morning sky Venus is bright and well placed in the dawn sky. Thu, 13 Dec 2018 (1,960 days ago) in Libra

14.

Comet 46P/Wirtanen reaches peak brightness Comet 46P/Wirtanen is forecast to reach the brightest point in its 2018 apparition. Thu, 13 Dec 2018 (1,960 days ago) in Taurus

15.

Comet 46P/Wirtanen passes perigee Comet 46P/Wirtanen makes its closest approach to the Earth. Thu, 13 Dec 2018 (1,960 days ago) in Taurus

16.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Thu, 13 Dec 2018 (1,960 days ago) in Scorpius

17.

Geminid meteor shower 2018 The Geminid meteor shower reaches its peak. Fri, 14 Dec 2018 (1,959 days ago) in Gemini

18.

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 (1,959 days ago) in Aquarius

19.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Fri, 14 Dec 2018 at 20:51 EDT (1,959 days ago) in Aquarius

20.

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 (1,958 days ago) in Aquarius