301.

Messier 101 is well placed The Pinwheel Galaxy M101 (NGC 5457; mag 7.9) in Ursa Major culminates at around midnight local time. Sun, 23 Apr 2023 (376 days ago) in Ursa Major

302.

π-Puppid meteor shower 2023 The π-Puppid meteor shower reaches its peak. Mon, 24 Apr 2023 (375 days ago) in Puppis

303.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°13'. Tue, 25 Apr 2023 at 22:19 EDT (374 days ago) in Gemini

304.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Tue, 25 Apr 2023 at 22:56 EDT (374 days ago) in Gemini

305.

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. Thu, 27 Apr 2023 at 17:20 EDT (372 days ago) in Cancer

306.

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. Fri, 28 Apr 2023 at 02:43 EDT (371 days ago) in Cancer

307.

Asteroid 7 Iris at opposition Asteroid 7 Iris makes closest approach to the Earth. Sun, 30 Apr 2023 at 12:46 EDT (369 days ago) in Libra

308.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Mon, 01 May 2023 at 19:22 EDT (368 days ago) in Aries

309.

Penumbral lunar eclipse There will be an eclipse of the Moon, visible from Antarctica, Asia, Russia, Africa and Oceania. Fri, 05 May 2023 at 13:24 EDT (364 days ago) in Libra

310.

Full Moon The Moon reaches full phase and is visible for much of the night. Fri, 05 May 2023 at 13:33 EDT (364 days ago) in Libra

311.

η-Aquariid meteor shower 2023 The η-Aquariid meteor shower reaches its peak. Sat, 06 May 2023 (363 days ago) in Aquarius

312.

Lunar occultation of Delta Scorpii The Moon will pass in front of Delta Scorpii (Dschubba), creating a lunar occultation visible from countries and territories including Antarctica, Brazil, Argentina and Bolivia amongst others. Sat, 06 May 2023 at 21:00 EDT (363 days ago) in Scorpius

313.

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, 07 May 2023 at 09:48 EDT (362 days ago) in Scorpius

314.

Comet C/2020 V2 (ZTF) passes perihelion Comet C/2020 V2 (ZTF) makes its closest approach to the Sun. Mon, 08 May 2023 (361 days ago) in Aries

315.

Venus at highest altitude in evening sky Venus is bright and well placed in the evening sky. Mon, 08 May 2023 (361 days ago) in Cancer

316.

η-Lyrid meteor shower 2023 The η-Lyrid meteor shower reaches its peak. Tue, 09 May 2023 (360 days ago) in Lyra

317.

Uranus at solar conjunction Uranus 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, 09 May 2023 at 15:46 EDT (360 days ago) in Aries

318.

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, 11 May 2023 at 01:05 EDT (358 days ago) in Capricornus

319.

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. Fri, 12 May 2023 at 10:28 EDT (357 days ago) in Capricornus

320.

Messier 5 is well placed The globular cluster M5 (NGC 5904; mag 5.7) in Serpens culminates at around midnight local time. Fri, 12 May 2023 (357 days ago) in Serpens Caput