401.

Messier 92 is well placed The globular cluster M92 (NGC 6341; mag 6.5) in Hercules culminates at around midnight local time. Sun, 11 Jun 2023 (474 days ago) in Hercules

402.

Close approach of Venus and M44 Venus and M44 pass close to each other. Tue, 13 Jun 2023 at 20:30 EDT (472 days ago) in Cancer

403.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Wed, 14 Jun 2023 at 01:26 EDT (471 days ago) in Aries

404.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 1°30'. Wed, 14 Jun 2023 at 02:36 EDT (471 days ago) in Aries

405.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 4°18'. Fri, 16 Jun 2023 at 16:40 EDT (469 days ago) in Taurus

406.

NGC 6388 is well placed The globular cluster NGC 6388 (mag 6.8) in Scorpius culminates at around midnight local time. Fri, 16 Jun 2023 (469 days ago) in Scorpius

407.

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. Sat, 17 Jun 2023 at 09:26 EDT (468 days ago) in Taurus

408.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Sat, 17 Jun 2023 at 12:51 EDT (468 days ago) in Aquarius

409.

The Butterfly cluster is well placed The Butterfly open star cluster (M6, NGC 6405; mag 4.2) in Scorpius culminates at around midnight local time. Sat, 17 Jun 2023 (468 days ago) in Scorpius

410.

NGC 6397 is well placed The globular cluster NGC 6397 (mag 5.6) in Ara culminates at around midnight local time. Sat, 17 Jun 2023 (468 days ago) in Ara

411.

New Moon The Moon disappears into the Sun's glare for a few days. Sun, 18 Jun 2023 at 00:38 EDT (467 days ago) in Taurus

412.

The cluster IC 4665 is well placed The open star cluster IC 4665 (mag 4.2) in Ophiuchus culminates at around midnight local time. Sun, 18 Jun 2023 (467 days ago) in Ophiuchus

413.

The Ptolemy cluster is well placed The Ptolemy Cluster (M7, NGC 6475; mag 3.3) in Scorpius culminates at around midnight local time. Tue, 20 Jun 2023 (465 days ago) in Scorpius

414.

June solstice 21 June will be the longest day of 2023 in the northern hemisphere. Wed, 21 Jun 2023 at 10:54 EDT (464 days ago) in Taurus

415.

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 (464 days ago) in Cancer

416.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Wed, 21 Jun 2023 at 23:13 EDT (464 days ago) in Cancer

417.

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 (463 days ago) in Leo

418.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Thu, 22 Jun 2023 at 08:54 EDT (463 days ago) in Leo

419.

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 (463 days ago) in Leo

420.

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 (462 days ago) in Sagittarius