521.

Southern δ-Aquariid meteor shower 2017 The Southern δ-Aquariid meteor shower reaches its peak. Sun, 30 Jul 2017 (2,544 days ago) in Aquarius

522.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Sat, 29 Jul 2017 at 20:32 EDT (2,545 days ago) in Leo

523.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 28 Jul 2017 at 18:15 EDT (2,546 days ago) in Virgo

524.

Piscis Austrinid meteor shower 2017 The Piscis Austrinid meteor shower reaches its peak. Fri, 28 Jul 2017 (2,546 days ago) in Piscis Austrinus

525.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°08'. Fri, 28 Jul 2017 at 16:16 EDT (2,546 days ago) in Virgo

526.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Thu, 27 Jul 2017 at 19:24 EDT (2,547 days ago) in Leo

527.

Mars at solar conjunction Mars is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Wed, 26 Jul 2017 at 20:30 EDT (2,548 days ago) in Cancer

528.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from Indonesia, Malaysia, Thailand and Christmas Island. Tue, 25 Jul 2017 at 06:39 EDT (2,549 days ago) in Leo

529.

Lunar occultation of Mercury The Moon will pass in front of Mercury, creating a lunar occultation visible from countries and territories including Russia, Japan, South Korea and North Korea amongst others. Tue, 25 Jul 2017 at 05:11 EDT (2,549 days ago) in Leo

530.

Close approach of the Moon and Mercury The Moon and Mercury pass close to each other. Tue, 25 Jul 2017 at 05:11 EDT (2,549 days ago) in Leo

531.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 51'. Tue, 25 Jul 2017 at 04:48 EDT (2,549 days ago) in Leo

532.

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. Mon, 24 Jul 2017 at 02:35 EDT (2,550 days ago) in Cancer

533.

New Moon The Moon disappears into the Sun's glare for a few days. Sun, 23 Jul 2017 at 05:46 EDT (2,551 days ago) in Cancer

534.

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, 21 Jul 2017 at 13:11 EDT (2,553 days ago) in Gemini

535.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Thu, 20 Jul 2017 at 07:49 EDT (2,554 days ago) in Taurus

536.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 2°43'. Thu, 20 Jul 2017 at 07:11 EDT (2,554 days ago) in Taurus

537.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from Asia. Wed, 19 Jul 2017 at 19:54 EDT (2,555 days ago) in Taurus

538.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Wed, 19 Jul 2017 at 16:19 EDT (2,555 days ago) in Taurus

539.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Tue, 18 Jul 2017 (2,555 days ago) in Leo

540.

Messier 55 is well placed The globular cluster M55 (NGC 6809l; mag 6.3) in Sagittarius culminates at around midnight local time. Mon, 17 Jul 2017 (2,557 days ago) in Sagittarius