| Moon Phase |
Day |
Phenomenon |
Hour
(UT) |
Hour
(EST) |
 |
2 |
The Moon is at its perigee, or closest point to Earth in its monthly orbit. |
0400 | 12 am
(midnight) |
 |
4 |
Venus is at its greatest brilliancy. |
1800 | 2 pm |
 |
7 |
FULL MOON |
1400 | 10 am |
|
7 |
Mercury is 4 degrees north of Saturn. |
1700 | 1 pm |
 |
10 |
Mars is 1 degree 9 minutes south of the Moon |
1900 | 3 pm |
 |
11 |
Neptune appears to be motionless in the sky as its apparent direct motion changes to backward, or retrograde, motion. |
0200 | 10 pm
(May 10) |
 |
11 |
Mars appears to be motionless in the sky as its apparent direct motion changes to backward, or retrograde, motion. |
1500 | 11 am |
 |
12 |
Mercury is 8 degrees north of Aldebaran, the brightest star in the constellation Taurus. |
1000 | 6 am |
 |
14 |
Neptune is 3 degrees north of the Moon. |
0000 | 8 pm
(May 13) |
 |
15 |
The Moon is at its apogee, or farthest point from Earth in its monthly orbit. |
0100 | 9 pm
(May 14) |
|
15 |
Uranus is 3 degrees north of the Moon. |
0800 | 4 am |
|
15 |
LAST QUARTER |
1000 | 6 am |
 |
16 |
Mercury is 3 degrees north of Jupiter. |
1700 | 1 pm |
 |
18 |
Ceres, the largest asteroid, appears to be motionless in the sky as its apparent direct motion changes to backward, or retrograde, motion. |
2100 | 5 pm |
 |
19 |
Venus is 4 degrees north of the Moon. |
0900 | 5 am |
 |
20 |
Vesta, the third-largest asteroid, is 0 degrees 6 minutes north of Moon. The asteroid is occulted, or hidden from view, by the Moon. |
2100 | 5 pm |
 |
22 |
Mercury is at its greatest elongation, or angular distance from the Sun, at 22 degrees east of the Sun. |
0400 | 12 am
(midnight) |
 |
23 |
NEW MOON |
0300 | 11 pm
(May 22) |
 |
24 |
Jupiter is 1 degree 3 minutes north of the Moon. |
0700 | 3 am |
|
24 |
Mercury is 3 degrees north of the Moon. |
1900 | 3 pm |
 |
25 |
Saturn is in conjunction with the Sun, that is, Saturn and Earth are aligned on opposite sides of the Sun. |
1300 | 9 am |
 |
27 |
The Moon is at its perigee, or closest point to Earth in its monthly orbit. |
1700 | 3 am |
 |
27 |
Pallas, the second-largest asteroid, is at opposition, that is Pallas and the Sun are aligned on opposite sides of Earth. |
1800 | 2 pm |
 |
29 |
FIRST QUARTER |
2200 | 6 pm |
|
29 |
Uranus appears to be motionless in the sky as its apparent direct motion changes to backward, or retrograde, motion. |
2200 | 6 pm |
