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Lunar Calendar Month May 2018 (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 May 2018.

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 quarter2018-05-0812:09
new moon2018-05-1521:48
1st quarter2018-05-2213:49
full moon2018-05-3000:19

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during May 2018.

PositionDatesTimeDistanceNotes
Apogee2018-05-0610:36404,457 km
Perigee2018-05-1807:07363,776 km

Meteor Activity

Active meteor showers this month and their peak days. For more information, see the meteor shower calendar 2018.

NamePeak Day
η-Aquariids2018-05-06
η-Lyrids2018-05-09

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
Jupiter2018-05-01 03:16
Saturn2018-05-05 06:31
Mars2018-05-06 17:24
Mercury2018-05-14 03:21
Venus2018-05-18 04:11
Beehive2018-05-20 21:57
Regulus2018-05-22 10:53
Jupiter2018-05-28 03:39

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of May 2018.

May 2018
wMondayTuesdayWednesdayThursdayFridaySaturdaySunday
Week 18
30Monday
 
1Tuesday
 
99.7% illuminated
Age:15.3
2Wednesday
 
97.5% illuminated
Age:16.3
3Thursday
 
93.5% illuminated
Age:17.2
4Friday
 
87.8% illuminated
Age:18.1
5Saturday
 
80.9% illuminated
Age:19
6Sunday
 
72.9% illuminated
Age:19.9
Week 19
7Monday
 
64.1% illuminated
Age:20.8
8Tuesday
 
54.8% illuminated
Age:21.7
9Wednesday
 
45.2% illuminated
Age:22.6
10Thursday
 
35.7% illuminated
Age:23.5
11Friday
 
26.5% illuminated
Age:24.4
12Saturday
 
18% illuminated
Age:25.4
13Sunday
 
10.6% illuminated
Age:26.4
Week 20
14Monday
 
4.8% illuminated
Age:27.5
15Tuesday
 
1.1% illuminated
Age:28.5
16Wednesday
 
0% illuminated
Age:0.1
17Thursday
 
1.7% illuminated
Age:1.2
18Friday
 
6.1% illuminated
Age:2.3
19Saturday
 
13% illuminated
Age:3.5
20Sunday
 
22% illuminated
Age:4.6
Week 21
21Monday
 
32.4% illuminated
Age:5.7
22Tuesday
 
43.6% illuminated
Age:6.8
23Wednesday
 
54.8% illuminated
Age:7.8
24Thursday
 
65.6% illuminated
Age:8.9
25Friday
 
75.5% illuminated
Age:9.9
26Saturday
 
84% illuminated
Age:10.9
27Sunday
 
90.9% illuminated
Age:11.9
Week 22
28Monday
 
95.9% illuminated
Age:12.9
29Tuesday
 
99% illuminated
Age:13.8
30Wednesday
 
100% illuminated
Age:14.7
31Thursday
 
99.1% illuminated
Age:15.7
1Friday
 
2Saturday
 
3Sunday
 
4Monday
 
5Tuesday
 
6Wednesday
 
7Thursday
 
8Friday
 
9Saturday
 
10Sunday
 
11Monday
 
12Tuesday
 
13Wednesday
 
14Thursday
 
15Friday
 
16Saturday
 
17Sunday
 
Content last updated on 2018-10-21T17:33:00Z