401.

Conjunction of Jupiter and Saturn Jupiter and Saturn share the same right ascension, at a separation of 6'15". Mon, 21 Dec 2020 at 08:34 EDT (1,304 days ago) in Capricornus

402.

December solstice 21 December will be the shortest day of 2020 in the northern hemisphere. Mon, 21 Dec 2020 at 04:55 EDT (1,304 days ago) in Sagittarius

403.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Sat, 19 Dec 2020 at 22:40 EDT (1,306 days ago) in Sagittarius

404.

December Leonis Minorid meteor shower 2020 The December Leonis Minorid meteor shower reaches its peak. Sat, 19 Dec 2020 (1,306 days ago) in Leo Minor

405.

Comet 141P/Machholz passes perihelion Comet 141P/Machholz makes its closest approach to the Sun. Thu, 17 Dec 2020 (1,308 days ago) in Aquarius

406.

Close approach of the Moon, Jupiter and Saturn The Moon, Jupiter and Saturn pass close to one another. Thu, 17 Dec 2020 at 01:05 EDT (1,308 days ago) in Capricornus

407.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°03'. Thu, 17 Dec 2020 at 00:19 EDT (1,308 days ago) in Capricornus

408.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 17 Dec 2020 at 00:12 EDT (1,308 days ago) in Sagittarius

409.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 2°55'. Wed, 16 Dec 2020 at 23:30 EDT (1,308 days ago) in Sagittarius

410.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Tue, 15 Dec 2020 at 21:27 EDT (1,310 days ago) in Ophiuchus

411.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Tue, 15 Dec 2020 (1,310 days ago) in Orion

412.

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. Tue, 15 Dec 2020 (1,310 days ago) in Orion

413.

Comae Berenicid meteor shower 2020 The Comae Berenicid meteor shower reaches its peak. Tue, 15 Dec 2020 (1,310 days ago) in Leo

414.

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. Tue, 15 Dec 2020 at 09:03 EDT (1,310 days ago) in Sagittarius

415.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 14 Dec 2020 at 11:17 EDT (1,311 days ago) in Ophiuchus

416.

Total solar eclipse There will be an eclipse of the Sun, visible from Argentina and Chile. Mon, 14 Dec 2020 at 11:14 EDT (1,311 days ago) in Ophiuchus

417.

Geminid meteor shower 2020 The Geminid meteor shower reaches its peak. Sun, 13 Dec 2020 (1,311 days ago) in Gemini

418.

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. Sat, 12 Dec 2020 (1,313 days ago) in Dorado

419.

Lunar occultation of Venus The Moon will pass in front of Venus, creating a lunar occultation visible from countries and territories including the Contiguous United States, Canada, Alaska and Mexico amongst others. Sat, 12 Dec 2020 at 16:06 EDT (1,313 days ago) in Libra

420.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Sat, 12 Dec 2020 at 16:06 EDT (1,313 days ago) in Libra