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Lunar Calendar Month May 2025 (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 2025.

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
1st quarter2025-05-0409:52
full moon2025-05-1212:56
3rd quarter2025-05-2007:59
new moon2025-05-2623:02

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during May 2025.

PositionDatesTimeDistanceNotes
Apogee2025-05-1020:50406,244 km
Perigee2025-05-2521:38359,022 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
Pollux2025-05-02 20:02
Mars2025-05-03 19:12
Beehive2025-05-03 19:27
Regulus2025-05-05 13:58
Spica2025-05-10 03:43
Antares2025-05-14 00:10
Saturn2025-05-22 13:51
Venus2025-05-23 19:52
Pollux2025-05-30 05:13
Beehive2025-05-31 04:00

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of May 2025.

May 2025
wMondayTuesdayWednesdayThursdayFridaySaturdaySunday
Week 18
28 Monday
 
29 Tuesday
 
30 Wednesday
 
1Thursday
 
15.9% illuminated
Age: 3.9
2Friday
 
25.1% illuminated
Age: 4.9
3Saturday
 
35.2% illuminated
Age: 6
4Sunday
 
45.6% illuminated
Age: 7
Week 19
5Monday
 
55.9% illuminated
Age: 7.9
6Tuesday
 
65.7% illuminated
Age: 8.9
7Wednesday
 
74.6% illuminated
Age: 9.8
8Thursday
 
82.5% illuminated
Age: 10.7
9Friday
 
89.1% illuminated
Age: 11.6
10Saturday
 
94.3% illuminated
Age: 12.5
11Sunday
 
97.9% illuminated
Age: 13.4
Week 20
12Monday
 
99.7% illuminated
Age: 14.3
13Tuesday
 
99.8% illuminated
Age: 15.2
14Wednesday
 
98% illuminated
Age: 16.1
15Thursday
 
94.4% illuminated
Age: 17
16Friday
 
89.1% illuminated
Age: 17.9
17Saturday
 
82.1% illuminated
Age: 18.9
18Sunday
 
73.7% illuminated
Age: 19.8
Week 21
19Monday
 
64.1% illuminated
Age: 20.8
20Tuesday
 
53.7% illuminated
Age: 21.8
21Wednesday
 
42.7% illuminated
Age: 22.8
22Thursday
 
31.9% illuminated
Age: 23.9
23Friday
 
21.6% illuminated
Age: 25
24Saturday
 
12.7% illuminated
Age: 26.1
25Sunday
 
5.7% illuminated
Age: 27.3
Week 22
26Monday
 
1.4% illuminated
Age: 28.4
27Tuesday
 
0% illuminated
Age: 0.1
28Wednesday
 
1.6% illuminated
Age: 1.2
29Thursday
 
6% illuminated
Age: 2.3
30Friday
 
12.6% illuminated
Age: 3.4
31Saturday
 
20.9% illuminated
Age: 4.5
1 Sunday
 
2 Monday
 
3 Tuesday
 
4 Wednesday
 
5 Thursday
 
6 Friday
 
7 Saturday
 
8 Sunday
 
9 Monday
 
10 Tuesday
 
11 Wednesday
 
12 Thursday
 
13 Friday
 
14 Saturday
 
15 Sunday
 
Content last updated on 2018-10-21T17:33:00Z