301.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Sat, 15 May 2021 (1,138 days ago) in Taurus

302.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 1°28'. Sun, 16 May 2021 at 00:47 EDT (1,137 days ago) in Gemini

303.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Sun, 16 May 2021 at 00:51 EDT (1,137 days ago) in Gemini

304.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Mon, 17 May 2021 at 04:14 EDT (1,136 days ago) in Taurus

305.

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. Wed, 19 May 2021 at 15:13 EDT (1,134 days ago) in Leo

306.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Sun, 23 May 2021 at 05:36 EDT (1,130 days ago) in Capricornus

307.

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. Tue, 25 May 2021 at 21:49 EDT (1,128 days ago) in Libra

308.

Lunar occultation of Beta1 Scorpii The Moon will pass in front of Beta1 Scorpii (Acrab), creating a lunar occultation visible from countries and territories including Argentina, Chile, Uruguay and Brazil amongst others. Wed, 26 May 2021 at 04:05 EDT (1,127 days ago) in Scorpius

309.

Full Moon The Moon reaches full phase and is visible for much of the night. Wed, 26 May 2021 at 07:13 EDT (1,127 days ago) in Scorpius

310.

Total lunar eclipse There will be an eclipse of the Moon, visible from Antarctica, the Americas, Oceania, Eastern and Southeast Asia, south-eastern Russia and Alaska. Wed, 26 May 2021 at 07:18 EDT (1,127 days ago) in Scorpius

311.

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. Thu, 27 May 2021 at 15:46 EDT (1,126 days ago) in Ophiuchus

312.

Lunar occultation of Sigma Sagittarii The Moon will pass in front of Sigma Sagittarii (Nunki), creating a lunar occultation visible from Africa, Asia, Southern and Eastern Europe, Corsica and RAF Akrotiri. Fri, 28 May 2021 at 19:07 EDT (1,125 days ago) in Sagittarius

313.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Fri, 28 May 2021 (1,125 days ago) in Scorpius

314.

Conjunction of Venus and Mercury Venus and Mercury share the same right ascension, at a separation of 25'. Sat, 29 May 2021 at 01:34 EDT (1,124 days ago) in Taurus

315.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 4°10'. Sun, 30 May 2021 at 21:18 EDT (1,123 days ago) in Capricornus

316.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Sun, 30 May 2021 at 23:06 EDT (1,123 days ago) in Capricornus

317.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°37'. Tue, 01 Jun 2021 at 05:00 EDT (1,121 days ago) in Aquarius

318.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Tue, 01 Jun 2021 at 07:56 EDT (1,121 days ago) in Aquarius

319.

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. Wed, 02 Jun 2021 at 03:25 EDT (1,120 days ago) in Aquarius

320.

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. Wed, 02 Jun 2021 (1,120 days ago) in Hercules