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Lunar Calendar Month January 2015 (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 January 2015.

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
full moon2015-01-0423:53
3rd quarter2015-01-1304:46
new moon2015-01-2008:14
1st quarter2015-01-2623:48

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during January 2015.

PositionDatesTimeDistanceNotes
Apogee2015-01-0913:18405,410 km
Perigee2015-01-2115:07359,642 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
Aldebaran2015-01-02 06:35
Saturn2015-01-16 06:52
Venus2015-01-22 00:01
Mars2015-01-22 23:40
Aldebaran2015-01-29 12:07

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of January 2015.

January 2015
wMondayTuesdayWednesdayThursdayFridaySaturdaySunday
Week 1
29Monday
 
30Tuesday
 
31Wednesday
 
1Thursday
 
84.1% illuminated
84.1% illuminated
Age:10.9
2Friday
 
91% illuminated
91% illuminated
Age:11.9
3Saturday
 
96% illuminated
96% illuminated
Age:12.9
4Sunday
 
99% illuminated
99% illuminated
Age:13.8
Week 2
5Monday
 
100% illuminated
100% illuminated
Age:14.8
6Tuesday
 
99% illuminated
99% illuminated
Age:15.7
7Wednesday
 
96.2% illuminated
96.2% illuminated
Age:16.6
8Thursday
 
91.7% illuminated
91.7% illuminated
Age:17.5
9Friday
 
85.7% illuminated
85.7% illuminated
Age:18.4
10Saturday
 
78.6% illuminated
78.6% illuminated
Age:19.3
11Sunday
 
70.3% illuminated
70.3% illuminated
Age:20.2
Week 3
12Monday
 
61.4% illuminated
61.4% illuminated
Age:21.1
13Tuesday
 
51.8% illuminated
51.8% illuminated
Age:22
14Wednesday
 
42.1% illuminated
42.1% illuminated
Age:22.9
15Thursday
 
32.3% illuminated
32.3% illuminated
Age:23.8
16Friday
 
23% illuminated
23% illuminated
Age:24.8
17Saturday
 
14.6% illuminated
14.6% illuminated
Age:25.8
18Sunday
 
7.6% illuminated
7.6% illuminated
Age:26.9
Week 4
19Monday
 
2.6% illuminated
2.6% illuminated
Age:28
20Tuesday
 
0.2% illuminated
0.2% illuminated
Age:29.1
21Wednesday
 
0.6% illuminated
0.6% illuminated
Age:0.7
22Thursday
 
4% illuminated
4% illuminated
Age:1.9
23Friday
 
10.1% illuminated
10.1% illuminated
Age:3
24Saturday
 
18.4% illuminated
18.4% illuminated
Age:4.2
25Sunday
 
28.3% illuminated
28.3% illuminated
Age:5.3
Week 5
26Monday
 
39% illuminated
39% illuminated
Age:6.3
27Tuesday
 
50% illuminated
50% illuminated
Age:7.4
28Wednesday
 
60.7% illuminated
60.7% illuminated
Age:8.4
29Thursday
 
70.7% illuminated
70.7% illuminated
Age:9.4
30Friday
 
79.6% illuminated
79.6% illuminated
Age:10.4
31Saturday
 
87.1% illuminated
87.1% illuminated
Age:11.3
1Sunday
 
2Monday
 
3Tuesday
 
4Wednesday
 
5Thursday
 
6Friday
 
7Saturday
 
8Sunday
 
9Monday
 
10Tuesday
 
11Wednesday
 
12Thursday
 
13Friday
 
14Saturday
 
15Sunday
 
Content last updated on 2016-01-23