421.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Fri, 20 Jul 2018 at 06:09 EDT (2,131 days ago) in Leo

422.

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. Thu, 19 Jul 2018 at 15:52 EDT (2,132 days ago) in Virgo

423.

Messier 55 is well placed The globular cluster M55 (NGC 6809l; mag 6.3) in Sagittarius culminates at around midnight local time. Tue, 17 Jul 2018 (2,134 days ago) in Sagittarius

424.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Mon, 16 Jul 2018 at 00:20 EDT (2,135 days ago) in Leo

425.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 1°37'. Sun, 15 Jul 2018 at 23:31 EDT (2,136 days ago) in Leo

426.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 2°11'. Sat, 14 Jul 2018 at 18:03 EDT (2,137 days ago) in Leo

427.

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, 13 Jul 2018 at 05:22 EDT (2,138 days ago) in Gemini

428.

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, 13 Jul 2018 at 04:24 EDT (2,138 days ago) in Gemini

429.

Partial solar eclipse There will be an eclipse of the Sun, visible from countries and territories including Antarctica, Macquarie Island, Tasmania and south-western New Zealand amongst others. Thu, 12 Jul 2018 at 23:01 EDT (2,139 days ago) in Gemini

430.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 12 Jul 2018 at 22:48 EDT (2,139 days ago) in Gemini

431.

134340 Pluto at opposition 134340 Pluto lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Thu, 12 Jul 2018 at 13:05 EDT (2,139 days ago) in Sagittarius

432.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Thu, 12 Jul 2018 at 00:08 EDT (2,139 days ago) in Cancer

433.

The Great Peacock Globular Cluster is well placed The bright globular cluster NGC 6752 (mag 5.4) in Pavo culminates at around midnight local time. Tue, 10 Jul 2018 (2,141 days ago) in Pavo

434.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Tue, 10 Jul 2018 at 13:19 EDT (2,141 days ago) in Libra

435.

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 (2,141 days ago) in Taurus

436.

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 (2,141 days ago) in Taurus

437.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Sat, 07 Jul 2018 at 11:02 EDT (2,144 days ago) in Cancer

438.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Fri, 06 Jul 2018 at 12:46 EDT (2,145 days ago) in Pisces

439.

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 (2,145 days ago) in Cetus

440.

Close approach of Mercury and M44 Mercury and M44 pass close to each other. Wed, 04 Jul 2018 at 09:28 EDT (2,147 days ago) in Cancer