301.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Sat, 02 Jun 2018 at 09:34 PDT (2,590 days ago) in Sagittarius

302.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Thu, 31 May 2018 at 18:07 PDT (2,592 days ago) in Sagittarius

303.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 1°38'. Thu, 31 May 2018 at 18:03 PDT (2,592 days ago) in Sagittarius

304.

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 01:24 PDT (2,592 days ago) in Sagittarius

305.

Full Moon The Moon reaches full phase and is visible for much of the night. Tue, 29 May 2018 at 07:19 PDT (2,594 days ago) in Ophiuchus

306.

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 (2,595 days ago) in Scorpius

307.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 27 May 2018 at 12:52 PDT (2,596 days ago) in Libra

308.

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 10:38 PDT (2,596 days ago) in Libra

309.

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 20:49 PDT (2,602 days ago) in Leo

310.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Sun, 20 May 2018 at 05:05 PDT (2,603 days ago) in Cancer

311.

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 14:04 PDT (2,606 days ago) in Orion

312.

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 11:08 PDT (2,606 days ago) in Taurus

313.

Venus at perihelion Venus passes its orbit's closest point to the Sun. Tue, 15 May 2018 at 16:15 PDT (2,608 days ago) in Taurus

314.

New Moon The Moon disappears into the Sun's glare for a few days. Tue, 15 May 2018 at 04:48 PDT (2,608 days ago) in Taurus

315.

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 10:19 PDT (2,610 days ago) in Pisces

316.

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 03:25 PDT (2,610 days ago) in Pisces

317.

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 (2,611 days ago) in Serpens Caput

318.

Conjunction of Mercury and Uranus Mercury and Uranus share the same right ascension, at a separation of 2°24'. Sat, 12 May 2018 at 14:00 PDT (2,611 days ago) in Aries

319.

Conjunction of Mercury and Eris Mercury and Eris share the same right ascension, at a separation of 9°45'. Fri, 11 May 2018 at 09:56 PDT (2,612 days ago) in Cetus

320.

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 04:53 PDT (2,613 days ago) in Libra