421.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Thu, 06 Apr 2017 at 01:18 EDT (2,659 days ago) in Sagittarius

422.

The Jewel Box cluster is well placed The Jewel Box open star cluster (NGC 4755, also known as the Kappa Crucis Cluster; mag 4.2) in Crux culminates at around midnight local time. Wed, 05 Apr 2017 (2,660 days ago) in Crux

423.

Messier 94 is well placed M94 (mag 8.2), a spiral galaxy in Canes Venatici culminates at around midnight local time. Tue, 04 Apr 2017 (2,661 days ago) in Canes Venatici

424.

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. Mon, 03 Apr 2017 at 14:39 EDT (2,662 days ago) in Gemini

425.

The Sombrero Galaxy is well placed The Sombrero Galaxy M104 (NGC 4594; mag 8.6) in Virgo culminates at around midnight local time. Sat, 01 Apr 2017 (2,664 days ago) in Virgo

426.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from countries and territories including Russia, China, Japan and North Korea amongst others. Sat, 01 Apr 2017 at 05:08 EDT (2,664 days ago) in Taurus

427.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Sat, 01 Apr 2017 at 02:00 EDT (2,664 days ago) in Aries

428.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Sat, 01 Apr 2017 (2,664 days ago) in Aries

429.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Sat, 01 Apr 2017 at 01:30 EDT (2,664 days ago) in Taurus

430.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 5°29'. Thu, 30 Mar 2017 at 09:02 EDT (2,666 days ago) in Aries

431.

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. Thu, 30 Mar 2017 at 08:32 EDT (2,666 days ago) in Aries

432.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Thu, 30 Mar 2017 at 01:39 EDT (2,666 days ago) in Pisces

433.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 6°35'. Wed, 29 Mar 2017 at 03:15 EDT (2,667 days ago) in Pisces

434.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 27 Mar 2017 at 22:58 EDT (2,669 days ago) in Cetus

435.

Conjunction of Mercury and Uranus Mercury and Uranus share the same right ascension, at a separation of 2°24'. Mon, 27 Mar 2017 at 01:57 EDT (2,669 days ago) in Pisces

436.

Venus at inferior solar conjunction Venus passes around the near side of the Sun. Sat, 25 Mar 2017 at 06:12 EDT (2,671 days ago) in Pisces

437.

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. Sat, 25 Mar 2017 at 05:41 EDT (2,671 days ago) in Aquarius

438.

136472 Makemake at opposition 136472 Makemake lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Thu, 23 Mar 2017 at 10:09 EDT (2,673 days ago) in Coma Berenices

439.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Thu, 23 Mar 2017 at 10:07 EDT (2,673 days ago) in Pisces

440.

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, 20 Mar 2017 at 11:58 EDT (2,676 days ago) in Sagittarius