4221.

Comet 185P/Petriew passes perihelion Comet 185P/Petriew makes its closest approach to the Sun. Mon, 25 Dec 2028 (1,632 days away) in Aquarius

4222.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 7°50'. Tue, 26 Dec 2028 at 13:51 EDT (1,633 days away) in Cetus

4223.

1 Ceres at solar conjunction 1 Ceres is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Wed, 27 Dec 2028 at 00:43 EDT (1,634 days away) in Sagittarius

4224.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Thu, 28 Dec 2028 at 10:40 EDT (1,635 days away) in Taurus

4225.

The cluster NGC 2232 is well placed The open star cluster NGC 2232 (mag 4.2) in Monoceros culminates at around midnight local time. Thu, 28 Dec 2028 (1,635 days away) in Monoceros

4226.

The Rosette Nebula is well placed The Rosette Nebula (C49; mag 9.0) in Monoceros culminates at around midnight local time. Fri, 29 Dec 2028 (1,636 days away) in Monoceros

4227.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Sat, 30 Dec 2028 at 22:30 EDT (1,637 days away) in Sagittarius

4228.

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. Sun, 31 Dec 2028 at 03:23 EDT (1,638 days away) in Gemini

4229.

Blue Moon The Moon reaches full phase and is visible for much of the night. Sun, 31 Dec 2028 at 11:48 EDT (1,638 days away) in Gemini

4230.

Total lunar eclipse There will be an eclipse of the Moon, visible from Asia, Russia, Africa, north-western Canada, Oceania, Europe, Greenland and Alaska. Sun, 31 Dec 2028 at 11:52 EDT (1,638 days away) in Gemini

4231.

The cluster Messier 41 is well placed The open star cluster M41 (NGC 2287; mag 4.5) in Canis Major culminates at around midnight local time. Mon, 01 Jan 2029 (1,639 days away) in Canis Major

4232.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Mon, 01 Jan 2029 (1,640 days away) in Sagittarius

4233.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Tue, 02 Jan 2029 at 07:03 EDT (1,640 days away) in Capricornus

4234.

The Earth at perihelion The Earth reaches its closest point to the Sun. Tue, 02 Jan 2029 at 13:13 EDT (1,640 days away) in Pisces

4235.

Quadrantid meteor shower 2029 The Quadrantid meteor shower reaches its peak. Wed, 03 Jan 2029 (1,641 days away) in Bootes

4236.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Thu, 04 Jan 2029 at 23:16 EDT (1,643 days away) in Sextans

4237.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Fri, 05 Jan 2029 at 07:25 EDT (1,643 days away) in Aries

4238.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 8°32'. Sat, 06 Jan 2029 at 19:27 EDT (1,644 days away) in Virgo

4239.

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. Sun, 07 Jan 2029 at 08:26 EDT (1,645 days away) in Virgo

4240.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 07 Jan 2029 at 22:33 EDT (1,645 days away) in Virgo