321.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from Canada and the Contiguous United States. Tue, 10 Jul 2018 at 05:34 EDT (2,140 days ago) in Taurus

322.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Tue, 10 Jul 2018 at 01:56 EDT (2,140 days ago) in Taurus

323.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Sat, 07 Jul 2018 at 11:02 EDT (2,143 days ago) in Cancer

324.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Fri, 06 Jul 2018 at 12:46 EDT (2,144 days ago) in Pisces

325.

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. Fri, 06 Jul 2018 at 03:51 EDT (2,144 days ago) in Cetus

326.

Close approach of Mercury and M44 Mercury and M44 pass close to each other. Wed, 04 Jul 2018 at 09:28 EDT (2,146 days ago) in Cancer

327.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Tue, 03 Jul 2018 (2,147 days ago) in Cancer

328.

The cluster IC 4756 is well placed The open star cluster IC 4756 (mag 4.6) in Serpens culminates at around midnight local time. Mon, 02 Jul 2018 (2,148 days ago) in Serpens Cauda

329.

Messier 22 is well placed The globular cluster M22 (mag 5.2) in Sagittarius, near the Galactic centre, culminates at around midnight local time. Sun, 01 Jul 2018 (2,149 days ago) in Sagittarius

330.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 4°46'. Sat, 30 Jun 2018 at 21:46 EDT (2,150 days ago) in Capricornus

331.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Sat, 30 Jun 2018 at 19:57 EDT (2,150 days ago) in Capricornus

332.

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. Fri, 29 Jun 2018 at 22:43 EDT (2,151 days ago) in Sagittarius

333.

The cluster NGC 6633 is well placed The open star cluster NGC 6633 (mag 4.6) in Ophiuchus culminates at around midnight local time. Fri, 29 Jun 2018 (2,151 days ago) in Ophiuchus

334.

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, 28 Jun 2018 at 10:55 EDT (2,152 days ago) in Sagittarius

335.

Full Moon The Moon reaches full phase and is visible for much of the night. Thu, 28 Jun 2018 at 00:52 EDT (2,152 days ago) in Sagittarius

336.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Wed, 27 Jun 2018 at 23:49 EDT (2,153 days ago) in Sagittarius

337.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 1°46'. Wed, 27 Jun 2018 at 23:41 EDT (2,153 days ago) in Sagittarius

338.

June Bootid meteor shower 2018 The June Bootid meteor shower reaches its peak. Wed, 27 Jun 2018 (2,153 days ago) in Bootes

339.

Saturn at opposition Saturn lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Wed, 27 Jun 2018 at 09:20 EDT (2,153 days ago) in Sagittarius

340.

Mars enters retrograde motion Mars reverses its direction of motion across the sky. Tue, 26 Jun 2018 at 17:01 EDT (2,154 days ago) in Capricornus