241.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Tue, 20 Jun 2017 at 18:20 EDT (2,510 days ago) in Aries

242.

The Ptolemy cluster is well placed The Ptolemy Cluster (M7, NGC 6475; mag 3.3) in Scorpius culminates at around midnight local time. Tue, 20 Jun 2017 (2,510 days ago) in Scorpius

243.

June solstice 21 June will be the longest day of 2017 in the northern hemisphere. Wed, 21 Jun 2017 at 00:19 EDT (2,509 days ago) in Taurus

244.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Wed, 21 Jun 2017 at 10:20 EDT (2,509 days ago) in Gemini

245.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Thu, 22 Jun 2017 at 07:08 EDT (2,508 days ago) in Taurus

246.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from Mexico. Thu, 22 Jun 2017 at 10:37 EDT (2,508 days ago) in Taurus

247.

The Lagoon Nebula is well placed The Lagoon Nebula (M8; mag 5.8) in Sagittarius culminates at around midnight local time. Thu, 22 Jun 2017 (2,508 days ago) in Sagittarius

248.

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. Fri, 23 Jun 2017 at 06:51 EDT (2,507 days ago) in Taurus

249.

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. Fri, 23 Jun 2017 at 14:50 EDT (2,507 days ago) in Orion

250.

NGC 6541 is well placed The globular cluster NGC 6541 (mag 6.6) in Corona Australis culminates at around midnight local time. Fri, 23 Jun 2017 (2,507 days ago) in Corona Australis

251.

New Moon The Moon disappears into the Sun's glare for a few days. Fri, 23 Jun 2017 at 22:31 EDT (2,507 days ago) in Orion

252.

Comet 71P/Clark passes perihelion Comet 71P/Clark makes its closest approach to the Sun. Sun, 25 Jun 2017 (2,505 days ago) in Scorpius

253.

June Bootid meteor shower 2017 The June Bootid meteor shower reaches its peak. Tue, 27 Jun 2017 (2,503 days ago) in Bootes

254.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from Peru and Ecuador. Tue, 27 Jun 2017 at 20:49 EDT (2,503 days ago) in Leo

255.

Asteroid 10 Hygiea at opposition Asteroid 10 Hygiea makes closest approach to the Earth. Wed, 28 Jun 2017 at 19:58 EDT (2,502 days ago) in Sagittarius

256.

The cluster NGC 6633 is well placed The open star cluster NGC 6633 (mag 4.6) in Ophiuchus culminates at around midnight local time. Wed, 28 Jun 2017 (2,502 days ago) in Ophiuchus

257.

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. Fri, 30 Jun 2017 at 20:51 EDT (2,500 days ago) in Virgo

258.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 2°42'. Sat, 01 Jul 2017 at 03:29 EDT (2,499 days ago) in Virgo

259.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sat, 01 Jul 2017 at 05:13 EDT (2,499 days ago) in Virgo

260.

Messier 22 is well placed The globular cluster M22 (mag 5.2) in Sagittarius, near the Galactic centre, culminates at around midnight local time. Sat, 01 Jul 2017 (2,499 days ago) in Sagittarius