301.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 1°41'. Mon, 20 May 2019 at 12:52 EDT (1,855 days ago) in Ophiuchus

302.

Asteroid 20 Massalia at opposition Asteroid 20 Massalia makes closest approach to the Earth. Mon, 20 May 2019 at 03:10 EDT (1,855 days ago) in Libra

303.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 18 May 2019 at 17:11 EDT (1,857 days ago) in Libra

304.

Conjunction of Venus and Uranus Venus and Uranus share the same right ascension, at a separation of 1°09'. Sat, 18 May 2019 at 04:12 EDT (1,857 days ago) in Aries

305.

Asteroid 11 Parthenope at opposition Asteroid 11 Parthenope makes closest approach to the Earth. Tue, 14 May 2019 at 05:34 EDT (1,861 days ago) in Libra

306.

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. Mon, 13 May 2019 at 17:52 EDT (1,862 days ago) in Leo

307.

Supernova SN2019fck discovered A new supernova has been discovered in NGC 5243. Sun, 12 May 2019 (1,862 days ago)

308.

Messier 5 is well placed The globular cluster M5 (NGC 5904; mag 5.7) in Serpens culminates at around midnight local time. Sun, 12 May 2019 (1,863 days ago) in Serpens Caput

309.

Comet C/2018 W1 (Catalina) passes perihelion Comet C/2018 W1 (Catalina) makes its closest approach to the Sun. Sun, 12 May 2019 (1,863 days ago) in Eridanus

310.

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. Sat, 11 May 2019 at 21:12 EDT (1,864 days ago) in Leo

311.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Fri, 10 May 2019 at 22:14 EDT (1,865 days ago) in Cancer

312.

η-Lyrid meteor shower 2019 The η-Lyrid meteor shower reaches its peak. Wed, 08 May 2019 (1,866 days ago) in Lyra

313.

Conjunction of Mercury and Uranus Mercury and Uranus share the same right ascension, at a separation of 1°22'. Wed, 08 May 2019 at 04:12 EDT (1,867 days ago) in Aries

314.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Tue, 07 May 2019 at 20:20 EDT (1,868 days ago) in Taurus

315.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°14'. Tue, 07 May 2019 at 19:34 EDT (1,868 days ago) in Taurus

316.

η-Aquariid meteor shower 2019 The η-Aquariid meteor shower reaches its peak. Mon, 06 May 2019 (1,869 days ago) in Aquarius

317.

New Moon The Moon disappears into the Sun's glare for a few days. Sat, 04 May 2019 at 18:46 EDT (1,871 days ago) in Aries

318.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 2°54'. Fri, 03 May 2019 at 02:25 EDT (1,872 days ago) in Pisces

319.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 3°37'. Thu, 02 May 2019 at 07:39 EDT (1,873 days ago) in Pisces

320.

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. Thu, 02 May 2019 at 02:08 EDT (1,873 days ago) in Cetus