1801.

Mars at apogee Mars reaches its furthest point from the Earth, as it passes around the far side of the Sun. Wed, 18 Oct 2023 at 05:12 EDT (258 days ago) in Virgo

1802.

Lunar occultation of Antares The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from countries and territories including Saudi Arabia, Iran, Yemen and Iraq amongst others. Wed, 18 Oct 2023 at 10:13 EDT (258 days ago) in Scorpius

1803.

136199 Eris at opposition 136199 Eris lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Wed, 18 Oct 2023 at 12:18 EDT (258 days ago) in Cetus

1804.

ε-Geminid meteor shower 2023 The ε-Geminid meteor shower reaches its peak. Wed, 18 Oct 2023 (258 days ago) in Gemini

1805.

Venus at highest altitude in morning sky Venus is bright and well placed in the dawn sky. Thu, 19 Oct 2023 (256 days ago) in Leo

1806.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Fri, 20 Oct 2023 at 01:49 EDT (256 days ago) in Virgo

1807.

Orionid meteor shower 2023 The Orionid meteor shower reaches its peak. Sat, 21 Oct 2023 (254 days ago) in Orion

1808.

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, 21 Oct 2023 at 23:29 EDT (255 days ago) in Sagittarius

1809.

Comet 2P/Encke passes perihelion Comet 2P/Encke makes its closest approach to the Sun. Sun, 22 Oct 2023 (254 days ago) in Virgo

1810.

Venus at dichotomy Venus reaches half phase in the dawn sky. Sun, 22 Oct 2023 at 17:36 EDT (254 days ago) in Leo

1811.

Venus at greatest elongation west Venus is bright and well placed in the dawn sky. Mon, 23 Oct 2023 at 20:05 EDT (253 days ago) in Leo

1812.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°46'. Tue, 24 Oct 2023 at 03:55 EDT (252 days ago) in Aquarius

1813.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 24 Oct 2023 at 05:47 EDT (252 days ago) in Aquarius

1814.

136108 Haumea at solar conjunction 136108 Haumea 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, 24 Oct 2023 at 09:20 EDT (252 days ago) in Bootes

1815.

Leonis Minorid meteor shower 2023 The Leonis Minorid meteor shower reaches its peak. Tue, 24 Oct 2023 (251 days ago) in Leo Minor

1816.

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. Wed, 25 Oct 2023 at 23:01 EDT (251 days ago) in Aquarius

1817.

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. Thu, 26 Oct 2023 at 15:01 EDT (250 days ago) in Pisces

1818.

The Perseus Double Cluster is well placed The Perseus Double Cluster (NGC 869 and NGC 884; combined mag 4.3) culminates at around midnight local time. Fri, 27 Oct 2023 (249 days ago) in Perseus

1819.

Partial lunar eclipse There will be an eclipse of the Moon, visible from Asia, Russia, Africa, the Americas, Europe, Antarctica and Oceania. Sat, 28 Oct 2023 at 16:15 EDT (248 days ago) in Aries

1820.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 28 Oct 2023 at 16:23 EDT (248 days ago) in Aries