421.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Wed, 09 Aug 2023 at 16:30 EDT (322 days ago) in Leo

422.

Asteroid 10 Hygiea at opposition Asteroid 10 Hygiea makes closest approach to the Earth. Thu, 10 Aug 2023 at 05:34 EDT (321 days ago) in Aquarius

423.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Thu, 10 Aug 2023 at 14:39 EDT (321 days ago) in Leo

424.

Perseid meteor shower 2023 The Perseid meteor shower reaches its peak. Sun, 13 Aug 2023 (318 days ago) in Perseus

425.

Venus at inferior solar conjunction Venus passes around the near side of the Sun. Sun, 13 Aug 2023 at 07:10 EDT (318 days ago) in Cancer

426.

Messier 15 is well placed The globular cluster M15 (NGC 7078; mag 6.3) in Pegasus culminates at around midnight local time. Mon, 14 Aug 2023 (317 days ago) in Pegasus

427.

Messier 2 is well placed The globular cluster M2 (NGC 7089; mag 6.6) in Aquarius culminates at around midnight local time. Tue, 15 Aug 2023 (316 days ago) in Aquarius

428.

New Moon The Moon disappears into the Sun's glare for a few days. Wed, 16 Aug 2023 at 05:39 EDT (315 days ago) in Leo

429.

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. Wed, 16 Aug 2023 at 07:54 EDT (315 days ago) in Leo

430.

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. Fri, 18 Aug 2023 at 04:41 EDT (313 days ago) in Leo

431.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 6°56'. Fri, 18 Aug 2023 at 07:26 EDT (313 days ago) in Leo

432.

Comet C/2023 E1 (ATLAS) passes perigee Comet C/2023 E1 (ATLAS) makes its closest approach to the Earth. Fri, 18 Aug 2023 (313 days ago) in Cygnus

433.

κ-Cygnid meteor shower 2023 The κ-Cygnid meteor shower reaches its peak. Fri, 18 Aug 2023 (313 days ago) in Draco

434.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 2°10'. Fri, 18 Aug 2023 at 19:07 EDT (313 days ago) in Virgo

435.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Fri, 18 Aug 2023 at 21:17 EDT (313 days ago) in Virgo

436.

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, 24 Aug 2023 at 05:57 EDT (307 days ago) in Scorpius

437.

Lunar occultation of Delta Scorpii The Moon will pass in front of Delta Scorpii (Dschubba), creating a lunar occultation visible from Antarctica. Thu, 24 Aug 2023 at 09:16 EDT (307 days ago) in Scorpius

438.

Lunar occultation of Antares The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from the Contiguous United States, Mexico and Canada. Thu, 24 Aug 2023 at 22:29 EDT (307 days ago) in Scorpius

439.

Asteroid 8 Flora at opposition Asteroid 8 Flora makes closest approach to the Earth. Sat, 26 Aug 2023 at 19:58 EDT (305 days ago) in Aquarius

440.

Saturn at opposition Saturn lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Sun, 27 Aug 2023 at 04:20 EDT (304 days ago) in Aquarius