281.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 3°41'. Wed, 21 Jun 2023 at 20:48 EDT (362 days ago) in Cancer

282.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Wed, 21 Jun 2023 at 23:13 EDT (362 days ago) in Cancer

283.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°47'. Thu, 22 Jun 2023 at 06:10 EDT (361 days ago) in Leo

284.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Thu, 22 Jun 2023 at 08:54 EDT (361 days ago) in Leo

285.

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. Thu, 22 Jun 2023 at 14:30 EDT (361 days ago) in Leo

286.

The Lagoon Nebula is well placed The Lagoon Nebula (M8; mag 5.8) in Sagittarius culminates at around midnight local time. Fri, 23 Jun 2023 (360 days ago) in Sagittarius

287.

NGC 6541 is well placed The globular cluster NGC 6541 (mag 6.6) in Corona Australis culminates at around midnight local time. Sat, 24 Jun 2023 (359 days ago) in Corona Australis

288.

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. Mon, 26 Jun 2023 at 03:50 EDT (357 days ago) in Virgo

289.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Tue, 27 Jun 2023 at 15:17 EDT (356 days ago) in Gemini

290.

June Bootid meteor shower 2023 The June Bootid meteor shower reaches its peak. Tue, 27 Jun 2023 (356 days ago) in Bootes

291.

The cluster NGC 6633 is well placed The open star cluster NGC 6633 (mag 4.6) in Ophiuchus culminates at around midnight local time. Thu, 29 Jun 2023 (354 days ago) in Ophiuchus

292.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Fri, 30 Jun 2023 at 15:28 EDT (353 days ago) in Pisces

293.

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, French Southern Territories, South Georgia and the South Sandwich Islands and Heard Island and McDonald Islands amongst others. Fri, 30 Jun 2023 at 15:54 EDT (353 days ago) in Scorpius

294.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Sat, 01 Jul 2023 at 01:12 EDT (352 days ago) in Gemini

295.

Close approach of Venus and Mars Venus and Mars pass within 3°33' of each other. Sat, 01 Jul 2023 at 03:09 EDT (352 days ago) in Leo

296.

Comet C/2023 E1 (ATLAS) passes perihelion Comet C/2023 E1 (ATLAS) makes its closest approach to the Sun. Sat, 01 Jul 2023 (352 days ago)

297.

Messier 22 is well placed The globular cluster M22 (mag 5.2) in Sagittarius, near the Galactic centre, culminates at around midnight local time. Sat, 01 Jul 2023 (352 days ago) in Sagittarius

298.

The cluster IC 4756 is well placed The open star cluster IC 4756 (mag 4.6) in Serpens culminates at around midnight local time. Sun, 02 Jul 2023 (351 days ago) in Serpens Cauda

299.

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. Mon, 03 Jul 2023 at 06:27 EDT (350 days ago) in Sagittarius

300.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 03 Jul 2023 at 07:38 EDT (350 days ago) in Sagittarius