281.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Sun, 23 Jun 2019 at 20:56 EDT (1,791 days ago) in Gemini

282.

The Lagoon Nebula is well placed The Lagoon Nebula (M8; mag 5.8) in Sagittarius culminates at around midnight local time. Sun, 23 Jun 2019 (1,791 days ago) in Sagittarius

283.

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. Sun, 23 Jun 2019 at 03:49 EDT (1,791 days ago) in Aquarius

284.

June solstice 21 June will be the longest day of 2019 in the northern hemisphere. Fri, 21 Jun 2019 at 11:47 EDT (1,793 days ago) in Taurus

285.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Fri, 21 Jun 2019 at 10:13 EDT (1,793 days ago) in Aquarius

286.

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 (1,794 days ago) in Scorpius

287.

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 (1,796 days ago) in Sagittarius

288.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 18 Jun 2019 at 23:48 EDT (1,796 days ago) in Sagittarius

289.

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 (1,796 days ago) in Sagittarius

290.

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 (1,796 days ago) in Ophiuchus

291.

Close approach of Mercury and Mars Mercury and Mars pass within 13' of each other. Tue, 18 Jun 2019 at 13:57 EDT (1,796 days ago) in Gemini

292.

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 (1,796 days ago) in Gemini

293.

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 (1,796 days ago) in Sagittarius

294.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Mon, 17 Jun 2019 at 22:57 EDT (1,797 days ago) in Gemini

295.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Mon, 17 Jun 2019 (1,796 days ago) in Gemini

296.

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 (1,797 days ago) in Ara

297.

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 (1,797 days ago) in Scorpius

298.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 17 Jun 2019 at 04:30 EDT (1,797 days ago) in Ophiuchus

299.

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 (1,798 days ago) in Scorpius

300.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 16 Jun 2019 at 15:24 EDT (1,798 days ago) in Ophiuchus