581.

Close approach of Mars and M44 Mars and M44 pass close to each other. Mon, 05 May 2025 at 09:44 EDT (293 days away) in Cancer

582.

η-Aquariid meteor shower 2025 The η-Aquariid meteor shower reaches its peak. Mon, 05 May 2025 (294 days away) in Aquarius

583.

Equinox on Saturn Saturn's seasons are changing, making its rings appear edge-on from the Earth. Tue, 06 May 2025 at 02:09 EDT (294 days away) in Pisces

584.

η-Lyrid meteor shower 2025 The η-Lyrid meteor shower reaches its peak. Thu, 08 May 2025 (296 days away) in Lyra

585.

Asteroid 9 Metis at opposition Asteroid 9 Metis makes closest approach to the Earth. Fri, 09 May 2025 at 03:10 EDT (297 days away) in Libra

586.

Conjunction of Neptune and Ceres Neptune and Ceres share the same right ascension, at a separation of 8°18'. Fri, 09 May 2025 at 07:53 EDT (297 days away) in Cetus

587.

Conjunction of Mercury and Eris Mercury and Eris share the same right ascension, at a separation of 8°40'. Fri, 09 May 2025 at 14:36 EDT (297 days away) in Cetus

588.

Lunar occultation of Spica The Moon will pass in front of Spica (Alpha Virginis), creating a lunar occultation visible from Oceania, Chile, Antarctica, Baker Island, Howland Island and Tokelau. Sat, 10 May 2025 at 04:06 EDT (298 days away) in Virgo

589.

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, 10 May 2025 at 20:46 EDT (298 days away) in Virgo

590.

Messier 5 is well placed The globular cluster M5 (NGC 5904; mag 5.7) in Serpens culminates at around midnight local time. Sun, 11 May 2025 (299 days away) in Serpens Caput

591.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 12 May 2025 at 12:55 EDT (300 days away) in Libra

592.

Lunar occultation of Antares The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from countries and territories including Argentina, Chile, Uruguay and Antarctica amongst others. Wed, 14 May 2025 at 00:44 EDT (302 days away) in Scorpius

593.

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. Wed, 14 May 2025 at 14:59 EDT (302 days away) in Ophiuchus

594.

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. Sat, 17 May 2025 at 19:23 EDT (305 days away) in Taurus

595.

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. Tue, 20 May 2025 at 07:59 EDT (308 days away) in Aquarius

596.

Close approach of the Moon, Pluto and Saturn The Moon, Pluto and Saturn pass close to one another. Thu, 22 May 2025 at 11:44 EDT (310 days away) in Pisces

597.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°49'. Thu, 22 May 2025 at 14:00 EDT (310 days away) in Pisces

598.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Fri, 23 May 2025 at 16:38 EDT (311 days away) in Pisces

599.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 3°59'. Fri, 23 May 2025 at 19:51 EDT (311 days away) in Pisces

600.

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. Sun, 25 May 2025 at 16:15 EDT (313 days away) in Aries