421.

New Moon The Moon disappears into the Sun's glare for a few days. Sat, 14 Oct 2023 at 13:56 EDT (247 days ago) in Virgo

422.

Annular solar eclipse There will be an eclipse of the Sun, visible from the Americas. Sat, 14 Oct 2023 at 14:00 EDT (247 days ago) in Virgo

423.

The Triangulum Galaxy is well placed The Triangulum Galaxy M33 (mag 5.8) culminates at around midnight local time. Sun, 15 Oct 2023 (246 days ago) in Triangulum

424.

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, 17 Oct 2023 at 02:44 EDT (244 days ago) in Libra

425.

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 (243 days ago) in Virgo

426.

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 (243 days ago) in Scorpius

427.

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 (243 days ago) in Cetus

428.

ε-Geminid meteor shower 2023 The ε-Geminid meteor shower reaches its peak. Wed, 18 Oct 2023 (243 days ago) in Gemini

429.

Venus at highest altitude in morning sky Venus is bright and well placed in the dawn sky. Thu, 19 Oct 2023 (241 days ago) in Leo

430.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Fri, 20 Oct 2023 at 01:49 EDT (241 days ago) in Virgo

431.

Orionid meteor shower 2023 The Orionid meteor shower reaches its peak. Sat, 21 Oct 2023 (239 days ago) in Orion

432.

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 (240 days ago) in Sagittarius

433.

Comet 2P/Encke passes perihelion Comet 2P/Encke makes its closest approach to the Sun. Sun, 22 Oct 2023 (239 days ago) in Virgo

434.

Venus at dichotomy Venus reaches half phase in the dawn sky. Sun, 22 Oct 2023 at 17:36 EDT (239 days ago) in Leo

435.

Venus at greatest elongation west Venus is bright and well placed in the dawn sky. Mon, 23 Oct 2023 at 20:05 EDT (238 days ago) in Leo

436.

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 (237 days ago) in Aquarius

437.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 24 Oct 2023 at 05:47 EDT (237 days ago) in Aquarius

438.

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 (237 days ago) in Bootes

439.

Leonis Minorid meteor shower 2023 The Leonis Minorid meteor shower reaches its peak. Tue, 24 Oct 2023 (236 days ago) in Leo Minor

440.

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 (236 days ago) in Aquarius