401.

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, 07 May 2018 at 22:09 EDT (2,292 days ago) in Capricornus

402.

η-Lyrid meteor shower 2018 The η-Lyrid meteor shower reaches its peak. Tue, 08 May 2018 (2,291 days ago) in Lyra

403.

Jupiter at opposition Jupiter 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. Tue, 08 May 2018 at 20:31 EDT (2,291 days ago) in Libra

404.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Thu, 10 May 2018 at 07:53 EDT (2,289 days ago) in Libra

405.

Conjunction of Mercury and Eris Mercury and Eris share the same right ascension, at a separation of 9°46'. Fri, 11 May 2018 at 16:57 EDT (2,288 days ago) in Cetus

406.

Conjunction of Mercury and Uranus Mercury and Uranus share the same right ascension, at a separation of 2°24'. Sat, 12 May 2018 at 17:00 EDT (2,287 days ago) in Aries

407.

Messier 5 is well placed The globular cluster M5 (NGC 5904; mag 5.7) in Serpens culminates at around midnight local time. Sat, 12 May 2018 (2,287 days ago) in Serpens Caput

408.

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. Sun, 13 May 2018 at 06:25 EDT (2,286 days ago) in Pisces

409.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 2°23'. Sun, 13 May 2018 at 13:19 EDT (2,286 days ago) in Pisces

410.

New Moon The Moon disappears into the Sun's glare for a few days. Tue, 15 May 2018 at 07:48 EDT (2,284 days ago) in Taurus

411.

Venus at perihelion Venus passes its orbit's closest point to the Sun. Tue, 15 May 2018 at 19:15 EDT (2,284 days ago) in Taurus

412.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 4°49'. Thu, 17 May 2018 at 14:08 EDT (2,282 days ago) in Taurus

413.

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, 17 May 2018 at 17:04 EDT (2,282 days ago) in Orion

414.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Sun, 20 May 2018 at 08:05 EDT (2,279 days ago) in Cancer

415.

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, 21 May 2018 at 23:49 EDT (2,278 days ago) in Leo

416.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°57'. Sun, 27 May 2018 at 13:38 EDT (2,272 days ago) in Libra

417.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 27 May 2018 at 15:52 EDT (2,272 days ago) in Libra

418.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Mon, 28 May 2018 (2,271 days ago) in Scorpius

419.

Full Moon The Moon reaches full phase and is visible for much of the night. Tue, 29 May 2018 at 10:19 EDT (2,270 days ago) in Ophiuchus

420.

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, 31 May 2018 at 04:24 EDT (2,268 days ago) in Sagittarius