301.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Fri, 21 Jun 2019 at 10:13 EDT (1,764 days ago) in Aquarius

302.

The Ptolemy cluster is well placed The Ptolemy Cluster (M7, NGC 6475; mag 3.3) in Scorpius culminates at around midnight local time. Thu, 20 Jun 2019 (1,765 days ago) in Scorpius

303.

Lunar occultation of Saturn The Moon will pass in front of Saturn, creating a lunar occultation visible from countries and territories including Argentina, South Africa, Namibia and Chile amongst others. Tue, 18 Jun 2019 at 23:48 EDT (1,767 days ago) in Sagittarius

304.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 18 Jun 2019 at 23:48 EDT (1,767 days ago) in Sagittarius

305.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 26'. Tue, 18 Jun 2019 at 23:45 EDT (1,767 days ago) in Sagittarius

306.

The cluster IC 4665 is well placed The open star cluster IC 4665 (mag 4.2) in Ophiuchus culminates at around midnight local time. Tue, 18 Jun 2019 (1,767 days ago) in Ophiuchus

307.

Close approach of Mercury and Mars Mercury and Mars pass within 13' of each other. Tue, 18 Jun 2019 at 13:57 EDT (1,767 days ago) in Gemini

308.

Conjunction of Mercury and Mars Mercury and Mars share the same right ascension, at a separation of 14'. Tue, 18 Jun 2019 at 10:35 EDT (1,767 days ago) in Gemini

309.

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, 18 Jun 2019 at 04:14 EDT (1,767 days ago) in Sagittarius

310.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Mon, 17 Jun 2019 at 22:57 EDT (1,768 days ago) in Gemini

311.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Mon, 17 Jun 2019 (1,767 days ago) in Gemini

312.

NGC 6397 is well placed The globular cluster NGC 6397 (mag 5.6) in Ara culminates at around midnight local time. Mon, 17 Jun 2019 (1,768 days ago) in Ara

313.

The Butterfly cluster is well placed The Butterfly open star cluster (M6, NGC 6405; mag 4.2) in Scorpius culminates at around midnight local time. Mon, 17 Jun 2019 (1,768 days ago) in Scorpius

314.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 17 Jun 2019 at 04:30 EDT (1,768 days ago) in Ophiuchus

315.

NGC 6388 is well placed The globular cluster NGC 6388 (mag 6.8) in Scorpius culminates at around midnight local time. Sun, 16 Jun 2019 (1,769 days ago) in Scorpius

316.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 16 Jun 2019 at 15:24 EDT (1,769 days ago) in Ophiuchus

317.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 1°59'. Sun, 16 Jun 2019 at 14:48 EDT (1,769 days ago) in Ophiuchus

318.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Tue, 11 Jun 2019 at 23:03 EDT (1,774 days ago) in Ophiuchus

319.

Messier 92 is well placed The globular cluster M92 (NGC 6341; mag 6.5) in Hercules culminates at around midnight local time. Tue, 11 Jun 2019 (1,774 days ago) in Hercules

320.

Daytime Arietid meteor shower 2019 The Daytime Arietid meteor shower reaches its peak. Mon, 10 Jun 2019 (1,774 days ago) in Aries