May

For terms in boldface, see Astronomical Terms.

Day	Phenomenon	Hour
2	FULL MOON	1000
3	Mercury is in superior conjunction.	0400
4	Antares, the brightest star in the constellation Scorpius, is 0° 5' north of the Moon. Occultation of Antares by the Moon.	1800
5	Jupiter is 6° north of the Moon.	1200
10	LAST QUARTER	0400
10	Neptune is 1° 8' north of the Moon.	0800
12	Uranus is 1° 3' south of the Moon. Occultation of Uranus by the Moon.	0700
13	Mars is 3° south of the Moon.	0100
15	The Moon is at perigee.	1500
16	NEW MOON	1900
16	Mercury is 7° north of Aldebaran, the brightest star in the constellation Taurus.	2100
18	Mercury is 3° south of the Moon.	0000
20	Venus is 1° 7' south of the Moon.	0100
22	Saturn is 0° 8' south of the Moon.	1900
23	Regulus, the brightest star in the constellation Leo, is 0° 7' south of the Moon.	1600
23	FIRST QUARTER	2100
25	Neptune appears to be motionless in the sky as it goes from direct motion to retrograde motion.	0600
27	The Moon is at apogee.	2200
30	Vesta, the third-largest asteroid, is at opposition.	1400
30	Venus is 4° south of Pollux, the brightest star in the constellation Gemini.	1900