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Lunar Calendar Month January 2021 (Guam)

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 Hagåtña, Guam during January 2021.

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
3rd quarter2021-01-0619:37
new moon2021-01-1315:00
1st quarter2021-01-2107:01
full moon2021-01-2905:16

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during January 2021.

PositionDatesTimeDistanceNotes
Perigee2021-01-1001:40367,389 km
Apogee2021-01-2123:12404,360 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
Beehive2021-01-01 17:05
Venus2021-01-12 06:11
Beehive2021-01-29 00:50
Mars2022-01-01 06:13

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of January 2021.

January 2021
wMondayTuesdayWednesdayThursdayFridaySaturdaySunday
Week 53
28Monday
 
29Tuesday
 
30Wednesday
 
31Thursday
 
1Friday
 
97.8% illuminated
Age:16.2
2Saturday
 
93.7% illuminated
Age:17.1
3Sunday
 
87.5% illuminated
Age:18.2
Week 1
4Monday
 
79.5% illuminated
Age:19.2
5Tuesday
 
70% illuminated
Age:20.2
6Wednesday
 
59.3% illuminated
Age:21.3
7Thursday
 
48% illuminated
Age:22.3
8Friday
 
36.7% illuminated
Age:23.4
9Saturday
 
26% illuminated
Age:24.5
10Sunday
 
16.5% illuminated
Age:25.6
Week 2
11Monday
 
8.8% illuminated
Age:26.7
12Tuesday
 
3.4% illuminated
Age:27.8
13Wednesday
 
0.5% illuminated
Age:28.9
14Thursday
 
0.2% illuminated
Age:0.4
15Friday
 
2.4% illuminated
Age:1.5
16Saturday
 
6.7% illuminated
Age:2.5
17Sunday
 
12.8% illuminated
Age:3.4
Week 3
18Monday
 
20.3% illuminated
Age:4.4
19Tuesday
 
28.7% illuminated
Age:5.3
20Wednesday
 
37.8% illuminated
Age:6.2
21Thursday
 
47.1% illuminated
Age:7.1
22Friday
 
56.5% illuminated
Age:8
23Saturday
 
65.7% illuminated
Age:8.9
24Sunday
 
74.4% illuminated
Age:9.8
Week 4
25Monday
 
82.3% illuminated
Age:10.7
26Tuesday
 
89.2% illuminated
Age:11.6
27Wednesday
 
94.6% illuminated
Age:12.6
28Thursday
 
98.3% illuminated
Age:13.5
29Friday
 
99.9% illuminated
Age:14.5
30Saturday
 
99.3% illuminated
Age:15.6
31Sunday
 
96.2% illuminated
Age:16.6
1Monday
 
2Tuesday
 
3Wednesday
 
4Thursday
 
5Friday
 
6Saturday
 
7Sunday
 
8Monday
 
9Tuesday
 
10Wednesday
 
11Thursday
 
12Friday
 
13Saturday
 
14Sunday
 
Content last updated on 2018-10-21T17:33:00Z