301.

Messier 5 is well placed The globular cluster M5 (NGC 5904; mag 5.7) in Serpens culminates at around midnight local time. Mon, 11 May 2020 (1,528 days ago) in Serpens Caput

302.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 2°15'. Tue, 12 May 2020 at 05:40 EDT (1,527 days ago) in Sagittarius

303.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Tue, 12 May 2020 at 06:09 EDT (1,527 days ago) in Sagittarius

304.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°40'. Tue, 12 May 2020 at 14:10 EDT (1,527 days ago) in Capricornus

305.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 12 May 2020 at 14:54 EDT (1,527 days ago) in Capricornus

306.

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. Thu, 14 May 2020 at 10:03 EDT (1,525 days ago) in Capricornus

307.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Thu, 14 May 2020 at 10:33 EDT (1,525 days ago) in Sagittarius

308.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 2°45'. Thu, 14 May 2020 at 22:01 EDT (1,525 days ago) in Aquarius

309.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Thu, 14 May 2020 at 23:51 EDT (1,525 days ago) in Aquarius

310.

Comet C/2017 T2 (PANSTARRS) reaches peak brightness Comet C/2017 T2 (PANSTARRS) is forecast to reach the brightest point in its 2020 apparition. Sat, 16 May 2020 (1,523 days ago) in Camelopardalis

311.

Close approach of Jupiter and Saturn Jupiter and Saturn pass within 4°41' of each other. Mon, 18 May 2020 at 00:42 EDT (1,521 days ago) in Capricornus

312.

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. Mon, 18 May 2020 at 03:44 EDT (1,521 days ago) in Cetus

313.

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. Wed, 20 May 2020 at 10:46 EDT (1,519 days ago) in Cetus

314.

Conjunction of Venus and Mercury Venus and Mercury share the same right ascension, at a separation of 53'. Fri, 22 May 2020 at 03:52 EDT (1,517 days ago) in Taurus

315.

New Moon The Moon disappears into the Sun's glare for a few days. Fri, 22 May 2020 at 13:40 EDT (1,517 days ago) in Taurus

316.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 3°41'. Sat, 23 May 2020 at 22:41 EDT (1,516 days ago) in Taurus

317.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 2°46'. Sun, 24 May 2020 at 06:51 EDT (1,515 days ago) in Taurus

318.

Comet 58P/Jackson-Neujmin passes perihelion Comet 58P/Jackson-Neujmin makes its closest approach to the Sun. Wed, 27 May 2020 (1,512 days ago) in Pisces

319.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Thu, 28 May 2020 (1,511 days ago) in Scorpius

320.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Fri, 29 May 2020 at 12:50 EDT (1,510 days ago) in Gemini