421.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Sat, 26 Aug 2017 at 16:37 EDT (2,517 days ago) in Sextans

422.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 25 Aug 2017 at 11:11 EDT (2,518 days ago) in Virgo

423.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°29'. Fri, 25 Aug 2017 at 09:01 EDT (2,518 days ago) in Virgo

424.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Fri, 25 Aug 2017 at 07:39 EDT (2,518 days ago) in Ophiuchus

425.

Supernova SN2017gjn discovered A new supernova has been discovered in NGC 1067. Wed, 23 Aug 2017 (2,519 days ago)

426.

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. Wed, 23 Aug 2017 at 15:39 EDT (2,520 days ago) in Virgo

427.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 21 Aug 2017 at 14:31 EDT (2,522 days ago) in Leo

428.

Total solar eclipse There will be an eclipse of the Sun, visible from the Contiguous United States. Mon, 21 Aug 2017 at 14:25 EDT (2,522 days ago) in Leo

429.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 2°14'. Sat, 19 Aug 2017 at 00:43 EDT (2,524 days ago) in Gemini

430.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Sat, 19 Aug 2017 at 00:25 EDT (2,524 days ago) in Gemini

431.

Supernova SN2017gkk discovered A new supernova has been discovered in NGC 2748. Fri, 18 Aug 2017 (2,524 days ago)

432.

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, 18 Aug 2017 at 09:18 EDT (2,525 days ago) in Gemini

433.

κ-Cygnid meteor shower 2017 The κ-Cygnid meteor shower reaches its peak. Thu, 17 Aug 2017 (2,526 days ago) in Draco

434.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from Africa, the Americas, Bonaire, Saint Eustatius and Saba, Grenada, the Portuguese Azores, Madeira, the Savage Islands and the Canary Islands. Wed, 16 Aug 2017 at 02:57 EDT (2,527 days ago) in Taurus

435.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Tue, 15 Aug 2017 at 23:15 EDT (2,528 days ago) in Taurus

436.

Messier 2 is well placed The globular cluster M2 (NGC 7089; mag 6.6) in Aquarius culminates at around midnight local time. Tue, 15 Aug 2017 (2,528 days ago) in Aquarius

437.

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. Mon, 14 Aug 2017 at 21:15 EDT (2,529 days ago) in Taurus

438.

Messier 15 is well placed The globular cluster M15 (NGC 7078; mag 6.3) in Pegasus culminates at around midnight local time. Mon, 14 Aug 2017 (2,529 days ago) in Pegasus

439.

Supernova SN2017gax discovered A new supernova has been discovered in NGC 1672. Sun, 13 Aug 2017 (2,529 days ago)

440.

Perseid meteor shower 2017 The Perseid meteor shower reaches its peak. Sat, 12 Aug 2017 (2,531 days ago) in Perseus