21.

Comet C/2024 G3 (ATLAS) passes perigee Comet C/2024 G3 (ATLAS) makes its closest approach to the Earth. Mon, 13 Jan 2025 (180 days ago) in Sagittarius

22.

Comet C/2024 G3 (ATLAS) passes perihelion Comet C/2024 G3 (ATLAS) makes its closest approach to the Sun. Mon, 13 Jan 2025 (180 days ago) in Sagittarius

23.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 13 Jan 2025 at 14:26 PDT (180 days ago) in Gemini

24.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 13'. Mon, 13 Jan 2025 at 19:42 PDT (180 days ago) in Gemini

25.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Mon, 13 Jan 2025 at 19:48 PDT (180 days ago) in Gemini

26.

Lunar occultation of Mars The Moon will pass in front of Mars, creating a lunar occultation visible from Africa, the Americas, Portugal, the Portuguese Azores, Madeira, the Savage Islands and the Canary Islands. Mon, 13 Jan 2025 at 19:48 PDT (180 days ago) in Gemini

27.

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. Tue, 14 Jan 2025 at 08:26 PDT (179 days ago) in Cancer

28.

The cluster Messier 47 is well placed The open star cluster M47 (NGC 2422; mag 4.4) in Puppis culminates at around midnight local time. Tue, 14 Jan 2025 (179 days ago) in Puppis

29.

NGC 2403 is well placed NGC 2403 (mag 8.9), a spiral galaxy in Camelopardalis culminates at around midnight local time. Tue, 14 Jan 2025 (179 days ago) in Camelopardalis

30.

Mars at opposition Mars lies in the opposite direction to the Sun in the sky, making it closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Wed, 15 Jan 2025 at 18:32 PDT (178 days ago) in Gemini

31.

The cluster NGC 2451 is well placed The open star cluster NGC 2451 (mag 2.8) in Puppis culminates at around midnight local time. Thu, 16 Jan 2025 (177 days ago) in Puppis

32.

Close approach of Venus and Saturn Venus and Saturn pass within 2°10' of each other. Sat, 18 Jan 2025 at 09:30 PDT (175 days ago) in Aquarius

33.

γ-Ursae Minorid meteor shower 2025 The γ-Ursae Minorid meteor shower reaches its peak. Sat, 18 Jan 2025 (174 days ago) in Ursa Minor

34.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Sun, 19 Jan 2025 at 06:01 PDT (174 days ago) in Sagittarius

35.

Conjunction of Venus and Saturn Venus and Saturn share the same right ascension, at a separation of 2°31'. Sun, 19 Jan 2025 at 21:16 PDT (174 days ago) in Aquarius

36.

The cluster NGC 2516 is well placed The open star cluster NGC 2516 (mag 3.8) in Volans culminates at around midnight local time. Mon, 20 Jan 2025 (173 days ago) in Carina

37.

Lunar occultation of Spica The Moon will pass in front of Spica (Alpha Virginis), creating a lunar occultation visible from Africa. Mon, 20 Jan 2025 at 20:30 PDT (173 days ago) in Virgo

38.

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, 20 Jan 2025 at 20:54 PDT (173 days ago) in Virgo

39.

134340 Pluto at solar conjunction 134340 Pluto is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Tue, 21 Jan 2025 at 04:19 PDT (172 days ago) in Capricornus

40.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Tue, 21 Jan 2025 at 12:31 PDT (172 days ago) in Virgo