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Lunar Calendar Month May 2011 (United States)

The Moon is the only natural satellite of the Earth and the fifth largest moon in the Solar System. It is the largest natural satellite in the solar system relative to the size of its planet. The following is information specific for Washington, District of Columbia, United States during May 2011.

Choose a country from the list to get relevant information:

Date and time of moon phases

The information in the following table comes from calculations published by the Astronomical Applications Department of the U.S. Naval Observatory.

Moon phasesDatesTime
new moon2011-05-0302:51
1st quarter2011-05-1016:33
full moon2011-05-1707:09
3rd quarter2011-05-2414:52

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during May 2011.

PositionDatesTimeDistanceNotes
Perigee2011-05-1507:19362,132 km
Apogee2011-05-2705:59405,004 km

Moon-Planet Conjunctions

A Moon-planet conjunction occurs when an astronomical object has either the same, or nearly the same, right ascension or the same ecliptic longitude of that of the Moon, as observed from Earth.

Astronomical ObjectsDate and Time
Spica2011-05-15 04:08
Mars2011-05-30 16:04
Venus2011-05-31 00:00

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of May 2011.

May 2011
wMondayTuesdayWednesdayThursdayFridaySaturdaySunday
Week 17
25 Monday
 
26 Tuesday
 
27 Wednesday
 
28 Thursday
 
29 Friday
 
30 Saturday
 
1Sunday
 
4.2% illuminated
Age: 27.6
Week 18
2Monday
 
1.2% illuminated
Age: 28.5
3Tuesday
 
0% illuminated
Age: 29.4
4Wednesday
 
0.7% illuminated
Age: 0.8
5Thursday
 
3.4% illuminated
Age: 1.7
6Friday
 
8% illuminated
Age: 2.7
7Saturday
 
14.4% illuminated
Age: 3.7
8Sunday
 
22.5% illuminated
Age: 4.6
Week 19
9Monday
 
32% illuminated
Age: 5.7
10Tuesday
 
42.5% illuminated
Age: 6.7
11Wednesday
 
53.6% illuminated
Age: 7.7
12Thursday
 
64.8% illuminated
Age: 8.8
13Friday
 
75.5% illuminated
Age: 9.9
14Saturday
 
84.9% illuminated
Age: 11
15Sunday
 
92.4% illuminated
Age: 12.1
Week 20
16Monday
 
97.5% illuminated
Age: 13.3
17Tuesday
 
99.9% illuminated
Age: 14.4
18Wednesday
 
99.3% illuminated
Age: 15.5
19Thursday
 
96.1% illuminated
Age: 16.6
20Friday
 
90.6% illuminated
Age: 17.7
21Saturday
 
83.4% illuminated
Age: 18.7
22Sunday
 
74.9% illuminated
Age: 19.7
Week 21
23Monday
 
65.6% illuminated
Age: 20.7
24Tuesday
 
56% illuminated
Age: 21.6
25Wednesday
 
46.4% illuminated
Age: 22.5
26Thursday
 
37% illuminated
Age: 23.4
27Friday
 
28.1% illuminated
Age: 24.3
28Saturday
 
20% illuminated
Age: 25.2
29Sunday
 
13% illuminated
Age: 26.1
Week 22
30Monday
 
7.2% illuminated
Age: 27
31Tuesday
 
3% illuminated
Age: 27.9
1 Wednesday
 
2 Thursday
 
3 Friday
 
4 Saturday
 
5 Sunday
 
6 Monday
 
7 Tuesday
 
8 Wednesday
 
9 Thursday
 
10 Friday
 
11 Saturday
 
12 Sunday
 
Content last updated on 2018-10-21T17:33:00Z