601.

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. Sun, 25 May 2025 at 21:33 EDT (314 days away) in Aries

602.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 26 May 2025 at 23:03 EDT (315 days away) in Taurus

603.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 5°12'. Wed, 28 May 2025 at 09:13 EDT (317 days away) in Taurus

604.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Wed, 28 May 2025 (317 days away) in Scorpius

605.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Fri, 30 May 2025 at 00:19 EDT (319 days away) in Taurus

606.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Sat, 31 May 2025 at 09:26 EDT (320 days away) in Taurus

607.

Venus at greatest elongation west Venus is bright and well placed in the dawn sky. Sat, 31 May 2025 at 16:57 EDT (320 days away) in Pisces

608.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 1°23'. Sun, 01 Jun 2025 at 05:48 EDT (321 days away) in Leo

609.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Sun, 01 Jun 2025 at 06:52 EDT (321 days away) in Leo

610.

Venus at dichotomy Venus reaches half phase in the dawn sky. Sun, 01 Jun 2025 at 17:31 EDT (321 days away) in Pisces

611.

The Great Globular Cluster in Hercules is well placed The Great Globular Cluster in Hercules (M13, NGC 6205; mag 5.8) culminates at around midnight local time. Mon, 02 Jun 2025 (322 days away) in Hercules

612.

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, 02 Jun 2025 at 23:41 EDT (322 days away) in Leo

613.

Messier 12 is well placed The globular cluster M12 (NGC 6218; mag 6.1) in Ophiuchus culminates at around midnight local time. Tue, 03 Jun 2025 (323 days away) in Ophiuchus

614.

Conjunction of Venus and Eris Venus and Eris share the same right ascension, at a separation of 8°49'. Thu, 05 Jun 2025 at 01:49 EDT (325 days away) in Cetus

615.

Messier 10 is well placed The globular cluster M10 (NGC 6254; mag 6.6) in Ophiuchus culminates at around midnight local time. Thu, 05 Jun 2025 (325 days away) in Ophiuchus

616.

Lunar occultation of Spica The Moon will pass in front of Spica (Alpha Virginis), creating a lunar occultation visible from countries and territories including Antarctica, French Southern Territories, Tasmania and Heard Island and McDonald Islands amongst others. Fri, 06 Jun 2025 at 10:29 EDT (326 days away) in Virgo

617.

Messier 62 is well placed The globular cluster M62 (NGC 6266; mag 6.4) in Ophiuchus culminates at around midnight local time. Fri, 06 Jun 2025 (326 days away) in Ophiuchus

618.

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. Sat, 07 Jun 2025 at 06:43 EDT (327 days away) in Virgo

619.

Lunar occultation of Antares The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from countries and territories including Australia, New Zealand, Papua New Guinea and Indonesia amongst others. Tue, 10 Jun 2025 at 07:00 EDT (330 days away) in Scorpius

620.

Daytime Arietid meteor shower 2025 The Daytime Arietid meteor shower reaches its peak. Tue, 10 Jun 2025 (330 days away) in Aries