401.

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. Tue, 15 Apr 2025 at 19:07 EDT (289 days away) in Libra

402.

Conjunction of Mercury and Neptune Mercury and Neptune share the same right ascension, at a separation of 41'. Wed, 16 Apr 2025 at 14:32 EDT (290 days away) in Pisces

403.

Mars at aphelion Mars passes the furthest point along its orbit from the Sun. Wed, 16 Apr 2025 at 16:38 EDT (290 days away) in Cancer

404.

Lunar occultation of Antares The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from countries and territories including Antarctica, South Africa, Namibia and Botswana amongst others. Wed, 16 Apr 2025 at 18:52 EDT (290 days away) in Scorpius

405.

Messier 83 is well placed The Southern Pinwheel Galaxy M83 (NGC 5236; mag 7.2), a face-on spiral galaxy in Hydra culminates at around midnight local time. Wed, 16 Apr 2025 (290 days away) in Hydra

406.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Thu, 17 Apr 2025 at 09:32 EDT (291 days away) in Pisces

407.

Messier 3 is well placed The globular cluster M3 (NGC 5272; mag 6.3) in Canes Venatici culminates at around midnight local time. Thu, 17 Apr 2025 (291 days away) in Canes Venatici

408.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Sat, 19 Apr 2025 (293 days away) in Pisces

409.

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. Sun, 20 Apr 2025 at 21:36 EDT (294 days away) in Capricornus

410.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Mon, 21 Apr 2025 at 11:06 EDT (295 days away) in Pisces

411.

136108 Haumea at opposition 136108 Haumea lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Tue, 22 Apr 2025 at 05:13 EDT (296 days away) in Bootes

412.

Lyrid meteor shower 2025 The Lyrid meteor shower reaches its peak. Tue, 22 Apr 2025 (296 days away) in Hercules

413.

Messier 101 is well placed The Pinwheel Galaxy M101 (NGC 5457; mag 7.9) in Ursa Major culminates at around midnight local time. Tue, 22 Apr 2025 (296 days away) in Ursa Major

414.

π-Puppid meteor shower 2025 The π-Puppid meteor shower reaches its peak. Wed, 23 Apr 2025 (297 days away) in Puppis

415.

Venus at greatest brightness Venus reaches its greatest brightness in the dawn sky. Thu, 24 Apr 2025 at 02:02 EDT (298 days away) in Pisces

416.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Thu, 24 Apr 2025 at 11:41 EDT (298 days away) in Cetus

417.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 2°23'. Thu, 24 Apr 2025 at 21:21 EDT (298 days away) in Pisces

418.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Thu, 24 Apr 2025 at 22:35 EDT (298 days away) in Pisces

419.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Thu, 24 Apr 2025 at 23:19 EDT (298 days away) in Pisces

420.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°17'. Fri, 25 Apr 2025 at 00:23 EDT (299 days away) in Pisces