This page presents a calendar of a selected year, showing key Moon events — apogees, perigees, and new and full Moons — drawn from our database. We have 500 years of Moon data, from 1800 to 2299. You can see overview statistics from this data on the Eclipse Statistics page.

You can pick the century, decade and year to display from the menu above. You can also switch to Table View to see the Moon events listed with full statistics.

Hover the mouse over an event to see data about the Moon during that event. The graphical icons show when eclipses occur. Note that all dates and times are in UT.

Moon Calendar, 1931

Month Sun Mon Tue Wed Thu Fri Sat
January
1
 
 
 
2
 
 
 
3
 
 
 
4
 
Full
4 Jan, 1931 13:14:46 UT
Full Moon
Sun Dist 147,091,631 km
(-1.7%)
Sun Size 0.542°
(+1.7%)
Moon Dist 365,830 km
(-4.4%)
Moon Geo Size 0.544°
(+4.3%)
Moon Zenith Size 0.554°
(+4.4%)
Moon Magnitude -13.09
(+12.2%)
 
5
 
 
 
6
 
 
Peri
6 Jan, 1931 14:38:05 UT
Perigee
Sun Dist 147,095,980 km
(-1.7%)
Sun Size 0.542°
(+1.7%)
Moon Dist 362,609 km
(-5.2%)
Moon Geo Size 0.549°
(+5.2%)
Moon Zenith Size 0.559°
(+5.3%)
Moon Magnitude -13.11
(+14.2%)
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
New
18 Jan, 1931 18:35:36 UT
New Moon
Sun Dist 147,193,030 km
(-1.6%)
Sun Size 0.542°
(+1.6%)
Moon Dist 400,465 km
(+4.7%)
Moon Geo Size 0.497°
(-4.7%)
Moon Zenith Size 0.505°
(-4.8%)
Moon Magnitude -12.90
(-6.5%)
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
Apo
22 Jan, 1931 13:29:51 UT
Apogee
Sun Dist 147,241,846 km
(-1.6%)
Sun Size 0.542°
(+1.6%)
Moon Dist 405,868 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.87
(-9.0%)
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
 
31
 
 
 
February
1
 
 
 
2
 
 
 
3
 
Full
3 Feb, 1931 00:25:41 UT
Full Moon
Sun Dist 147,446,780 km
(-1.5%)
Sun Size 0.541°
(+1.5%)
Moon Dist 358,958 km
(-6.2%)
Moon Geo Size 0.555°
(+6.3%)
Moon Zenith Size 0.564°
(+6.4%)
Moon Magnitude -13.13
(+16.0%)
Peri
3 Feb, 1931 22:24:47 UT
Perigee
Sun Dist 147,467,742 km
(-1.4%)
Sun Size 0.541°
(+1.4%)
Moon Dist 358,160 km
(-6.4%)
Moon Geo Size 0.556°
(+6.5%)
Moon Zenith Size 0.566°
(+6.7%)
Moon Magnitude -13.14
(+16.5%)
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
New
17 Feb, 1931 13:10:43 UT
New Moon
Sun Dist 147,847,192 km
(-1.2%)
Sun Size 0.539°
(+1.2%)
Moon Dist 405,880 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.86
(-9.7%)
 
18
 
 
Apo
18 Feb, 1931 21:48:03 UT
Apogee
Sun Dist 147,889,748 km
(-1.2%)
Sun Size 0.539°
(+1.2%)
Moon Dist 406,487 km
(+6.2%)
Moon Geo Size 0.490°
(-6.1%)
Moon Zenith Size 0.497°
(-6.2%)
Moon Magnitude -12.85
(-10.1%)
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
March
1
 
 
 
2
 
 
 
3
 
 
 
4
 
Full
4 Mar, 1931 10:35:46 UT
Full Moon
Sun Dist 148,353,242 km
(-0.8%)
Sun Size 0.538°
(+0.8%)
Moon Dist 356,641 km
(-6.8%)
Moon Geo Size 0.558°
(+7.0%)
Moon Zenith Size 0.568°
(+7.1%)
Moon Magnitude -13.13
(+16.1%)
Peri
4 Mar, 1931 10:46:42 UT
Perigee
Sun Dist 148,353,528 km
(-0.8%)
Sun Size 0.538°
(+0.8%)
Moon Dist 356,641 km
(-6.8%)
Moon Geo Size 0.558°
(+7.0%)
Moon Zenith Size 0.568°
(+7.1%)
Moon Magnitude -13.13
(+16.1%)
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
Apo
17 Mar, 1931 22:40:50 UT
Apogee
Sun Dist 148,899,969 km
(-0.5%)
Sun Size 0.536°
(+0.5%)
Moon Dist 406,526 km
(+6.2%)
Moon Geo Size 0.490°
(-6.1%)
Moon Zenith Size 0.497°
(-6.2%)
Moon Magnitude -12.84
(-11.3%)
18
 
 
 
19
 
New
19 Mar, 1931 07:50:28 UT
New Moon
Sun Dist 148,957,708 km
(-0.4%)
Sun Size 0.535°
(+0.4%)
Moon Dist 405,889 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.84
(-11.1%)
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
 
31
 
 
 
April
1
 
 
Peri
1 Apr, 1931 22:03:12 UT
Perigee
Sun Dist 149,527,959 km
(-0.1%)
Sun Size 0.533°
(+0.0%)
Moon Dist 358,330 km
(-6.4%)
Moon Geo Size 0.556°
(+6.5%)
Moon Zenith Size 0.565°
(+6.6%)
Moon Magnitude -13.10
(+13.2%)
2
2 Apr, 1931 UT
Total Lunar Eclipse
Moon Size at
Max Eclipse		 0.564°
(+6.4%)
Full
2 Apr, 1931 20:05:18 UT
Full Moon
Sun Dist 149,567,388 km
(-0.0%)
Sun Size 0.533°
(+0.0%)
Moon Dist 359,122 km
(-6.1%)
Moon Geo Size 0.554°
(+6.3%)
Moon Zenith Size 0.564°
(+6.4%)
Moon Magnitude -13.10
(+12.7%)
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
Apo
14 Apr, 1931 08:30:45 UT
Apogee
Sun Dist 150,067,874 km
(+0.3%)
Sun Size 0.531°
(-0.3%)
Moon Dist 405,878 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.83
(-12.4%)
15
 
 
 
16
 
 
 
17
 
 
 
18
18 Apr, 1931 UT
Partial Solar Eclipse
Moon Size at
Max Eclipse		 0.497°
(-6.3%)
New
18 Apr, 1931 00:59:31 UT
New Moon
Sun Dist 150,223,356 km
(+0.4%)
Sun Size 0.531°
(-0.4%)
Moon Dist 400,701 km
(+4.7%)
Moon Geo Size 0.497°
(-4.8%)
Moon Zenith Size 0.505°
(-4.8%)
Moon Magnitude -12.85
(-10.3%)
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
Peri
30 Apr, 1931 03:33:52 UT
Perigee
Sun Dist 150,699,742 km
(+0.7%)
Sun Size 0.529°
(-0.7%)
Moon Dist 362,515 km
(-5.3%)
Moon Geo Size 0.549°
(+5.3%)
Moon Zenith Size 0.559°
(+5.4%)
Moon Magnitude -13.06
(+8.9%)
May
1
 
 
 
2
 
Full
2 May, 1931 05:14:09 UT
Full Moon
Sun Dist 150,777,802 km
(+0.8%)
Sun Size 0.529°
(-0.8%)
Moon Dist 365,739 km
(-4.4%)
Moon Geo Size 0.544°
(+4.3%)
Moon Zenith Size 0.554°
(+4.4%)
Moon Magnitude -13.04
(+6.9%)
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
Apo
12 May, 1931 01:13:30 UT
Apogee
Sun Dist 151,135,543 km
(+1.0%)
Sun Size 0.528°
(-1.0%)
Moon Dist 404,830 km
(+5.8%)
Moon Geo Size 0.492°
(-5.7%)
Moon Zenith Size 0.499°
(-5.8%)
Moon Magnitude -12.82
(-13.2%)
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
New
17 May, 1931 15:27:42 UT
New Moon
Sun Dist 151,318,857 km
(+1.1%)
Sun Size 0.527°
(-1.1%)
Moon Dist 391,796 km
(+2.4%)
Moon Geo Size 0.508°
(-2.6%)
Moon Zenith Size 0.516°
(-2.6%)
Moon Magnitude -12.88
(-7.5%)
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
Peri
27 May, 1931 16:22:24 UT
Perigee
Sun Dist 151,595,389 km
(+1.3%)
Sun Size 0.526°
(-1.3%)
Moon Dist 367,581 km
(-3.9%)
Moon Geo Size 0.542°
(+3.8%)
Moon Zenith Size 0.551°
(+3.9%)
Moon Magnitude -13.02
(+4.7%)
28
 
 
 
29
 
 
 
30
 
 
 
31
 
Full
31 May, 1931 14:32:48 UT
Full Moon
Sun Dist 151,689,189 km
(+1.4%)
Sun Size 0.526°
(-1.4%)
Moon Dist 375,198 km
(-1.9%)
Moon Geo Size 0.531°
(+1.7%)
Moon Zenith Size 0.540°
(+1.7%)
Moon Magnitude -12.97
(+0.3%)
 
June
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
Apo
8 Jun, 1931 19:52:39 UT
Apogee
Sun Dist 151,863,772 km
(+1.5%)
Sun Size 0.525°
(-1.5%)
Moon Dist 404,121 km
(+5.6%)
Moon Geo Size 0.493°
(-5.6%)
Moon Zenith Size 0.500°
(-5.7%)
Moon Magnitude -12.81
(-13.7%)
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
New
16 Jun, 1931 03:01:33 UT
New Moon
Sun Dist 151,981,562 km
(+1.6%)
Sun Size 0.525°
(-1.6%)
Moon Dist 381,226 km
(-0.4%)
Moon Geo Size 0.522°
(+0.1%)
Moon Zenith Size 0.531°
(+0.1%)
Moon Magnitude -12.93
(-3.2%)
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
Peri
22 Jun, 1931 01:07:47 UT
Perigee
Sun Dist 152,043,544 km
(+1.6%)
Sun Size 0.525°
(-1.6%)
Moon Dist 369,558 km
(-3.4%)
Moon Geo Size 0.539°
(+3.3%)
Moon Zenith Size 0.548°
(+3.3%)
Moon Magnitude -13.00
(+2.9%)
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
Full
30 Jun, 1931 00:46:50 UT
Full Moon
Sun Dist 152,087,375 km
(+1.6%)
Sun Size 0.524°
(-1.6%)
Moon Dist 385,842 km
(+0.8%)
Moon Geo Size 0.516°
(-1.1%)
Moon Zenith Size 0.524°
(-1.1%)
Moon Magnitude -12.91
(-5.6%)
 
July
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
Apo
6 Jul, 1931 14:30:57 UT
Apogee
Sun Dist 152,097,476 km
(+1.7%)
Sun Size 0.524°
(-1.6%)
Moon Dist 404,239 km
(+5.6%)
Moon Geo Size 0.492°
(-5.6%)
Moon Zenith Size 0.500°
(-5.7%)
Moon Magnitude -12.81
(-14.0%)
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
New
15 Jul, 1931 12:19:49 UT
New Moon
Sun Dist 152,063,049 km
(+1.6%)
Sun Size 0.524°
(-1.6%)
Moon Dist 370,997 km
(-3.0%)
Moon Geo Size 0.537°
(+2.9%)
Moon Zenith Size 0.546°
(+2.9%)
Moon Magnitude -12.99
(+2.1%)
 
16
 
 
 
17
 
 
 
18
 
 
Peri
18 Jul, 1931 12:15:28 UT
Perigee
Sun Dist 152,035,824 km
(+1.6%)
Sun Size 0.525°
(-1.6%)
Moon Dist 365,543 km
(-4.5%)
Moon Geo Size 0.545°
(+4.4%)
Moon Zenith Size 0.554°
(+4.5%)
Moon Magnitude -13.02
(+5.2%)
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
Full
29 Jul, 1931 12:47:28 UT
Full Moon
Sun Dist 151,878,234 km
(+1.5%)
Sun Size 0.525°
(-1.5%)
Moon Dist 395,813 km
(+3.4%)
Moon Geo Size 0.503°
(-3.6%)
Moon Zenith Size 0.511°
(-3.6%)
Moon Magnitude -12.85
(-10.1%)
 
30
 
 
 
31
 
 
 
August
1
 
 
 
2
 
 
 
3
 
 
Apo
3 Aug, 1931 07:54:00 UT
Apogee
Sun Dist 151,789,881 km
(+1.4%)
Sun Size 0.525°
(-1.4%)
Moon Dist 405,057 km
(+5.9%)
Moon Geo Size 0.491°
(-5.8%)
Moon Zenith Size 0.499°
(-5.9%)
Moon Magnitude -12.81
(-14.0%)
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
New
13 Aug, 1931 20:26:46 UT
New Moon
Sun Dist 151,549,089 km
(+1.3%)
Sun Size 0.526°
(-1.3%)
Moon Dist 362,798 km
(-5.2%)
Moon Geo Size 0.549°
(+5.2%)
Moon Zenith Size 0.558°
(+5.3%)
Moon Magnitude -13.05
(+7.5%)
 
14
 
 
 
15
 
 
Peri
15 Aug, 1931 09:49:34 UT
Perigee
Sun Dist 151,506,547 km
(+1.3%)
Sun Size 0.526°
(-1.3%)
Moon Dist 360,780 km
(-5.7%)
Moon Geo Size 0.552°
(+5.8%)
Moon Zenith Size 0.561°
(+5.9%)
Moon Magnitude -13.06
(+8.8%)
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
Full
28 Aug, 1931 03:09:25 UT
Full Moon
Sun Dist 151,105,024 km
(+1.0%)
Sun Size 0.528°
(-1.0%)
Moon Dist 403,190 km
(+5.4%)
Moon Geo Size 0.494°
(-5.4%)
Moon Zenith Size 0.502°
(-5.4%)
Moon Magnitude -12.83
(-12.4%)
 
29
 
 
 
30
 
 
Apo
30 Aug, 1931 21:32:59 UT
Apogee
Sun Dist 151,010,133 km
(+0.9%)
Sun Size 0.528°
(-0.9%)
Moon Dist 405,949 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.81
(-13.5%)
31
 
 
 
September
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
12 Sep, 1931 UT
Partial Solar Eclipse
Moon Size at
Max Eclipse		 0.556°
(+4.9%)
New
12 Sep, 1931 04:26:12 UT
New Moon
Sun Dist 150,558,551 km
(+0.6%)
Sun Size 0.530°
(-0.6%)
Moon Dist 357,963 km
(-6.5%)
Moon Geo Size 0.556°
(+6.6%)
Moon Zenith Size 0.566°
(+6.7%)
Moon Magnitude -13.09
(+11.9%)
Peri
12 Sep, 1931 17:28:46 UT
Perigee
Sun Dist 150,537,003 km
(+0.6%)
Sun Size 0.530°
(-0.6%)
Moon Dist 357,679 km
(-6.5%)
Moon Geo Size 0.557°
(+6.7%)
Moon Zenith Size 0.566°
(+6.8%)
Moon Magnitude -13.09
(+12.1%)
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
26 Sep, 1931 UT
Total Lunar Eclipse
Moon Size at
Max Eclipse		 0.498°
(-6.2%)
Full
26 Sep, 1931 19:44:56 UT
Full Moon
Sun Dist 149,946,066 km
(+0.2%)
Sun Size 0.532°
(-0.2%)
Moon Dist 406,273 km
(+6.2%)
Moon Geo Size 0.490°
(-6.1%)
Moon Zenith Size 0.498°
(-6.2%)
Moon Magnitude -12.83
(-12.4%)
 
27
 
 
Apo
27 Sep, 1931 02:43:05 UT
Apogee
Sun Dist 149,933,730 km
(+0.2%)
Sun Size 0.532°
(-0.2%)
Moon Dist 406,300 km
(+6.2%)
Moon Geo Size 0.490°
(-6.1%)
Moon Zenith Size 0.498°
(-6.2%)
Moon Magnitude -12.83
(-12.4%)
28
 
 
 
29
 
 
 
30
 
 
 
October
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
11 Oct, 1931 UT
Partial Solar Eclipse
Moon Size at
Max Eclipse		 0.557°
(+5.0%)
New
11 Oct, 1931 13:05:48 UT
New Moon
Sun Dist 149,323,717 km
(-0.2%)
Sun Size 0.534°
(+0.2%)
Moon Dist 357,411 km
(-6.6%)
Moon Geo Size 0.557°
(+6.8%)
Moon Zenith Size 0.567°
(+6.9%)
Moon Magnitude -13.11
(+14.1%)
Peri
11 Oct, 1931 04:28:48 UT
Perigee
Sun Dist 149,339,086 km
(-0.2%)
Sun Size 0.534°
(+0.2%)
Moon Dist 357,285 km
(-6.6%)
Moon Geo Size 0.557°
(+6.8%)
Moon Zenith Size 0.567°
(+6.9%)
Moon Magnitude -13.11
(+14.2%)
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
Apo
24 Oct, 1931 04:51:36 UT
Apogee
Sun Dist 148,782,590 km
(-0.6%)
Sun Size 0.536°
(+0.5%)
Moon Dist 406,019 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.84
(-10.9%)
25
 
 
 
26
 
Full
26 Oct, 1931 13:33:59 UT
Full Moon
Sun Dist 148,686,056 km
(-0.6%)
Sun Size 0.536°
(+0.6%)
Moon Dist 404,100 km
(+5.6%)
Moon Geo Size 0.493°
(-5.6%)
Moon Zenith Size 0.500°
(-5.7%)
Moon Magnitude -12.86
(-10.0%)
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
 
31
 
 
 
November
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
Peri
8 Nov, 1931 15:01:56 UT
Perigee
Sun Dist 148,194,583 km
(-1.0%)
Sun Size 0.538°
(+0.9%)
Moon Dist 359,921 km
(-5.9%)
Moon Geo Size 0.553°
(+6.0%)
Moon Zenith Size 0.563°
(+6.1%)
Moon Magnitude -13.11
(+14.2%)
9
 
New
9 Nov, 1931 22:55:17 UT
New Moon
Sun Dist 148,147,430 km
(-1.0%)
Sun Size 0.538°
(+1.0%)
Moon Dist 361,475 km
(-5.5%)
Moon Geo Size 0.551°
(+5.6%)
Moon Zenith Size 0.560°
(+5.7%)
Moon Magnitude -13.11
(+13.3%)
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
Apo
20 Nov, 1931 16:45:27 UT
Apogee
Sun Dist 147,786,897 km
(-1.2%)
Sun Size 0.540°
(+1.2%)
Moon Dist 405,255 km
(+5.9%)
Moon Geo Size 0.491°
(-5.8%)
Moon Zenith Size 0.499°
(-5.9%)
Moon Magnitude -12.86
(-9.4%)
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
Full
25 Nov, 1931 07:09:51 UT
Full Moon
Sun Dist 147,652,349 km
(-1.3%)
Sun Size 0.540°
(+1.3%)
Moon Dist 396,967 km
(+3.7%)
Moon Geo Size 0.501°
(-3.9%)
Moon Zenith Size 0.509°
(-3.9%)
Moon Magnitude -12.91
(-5.4%)
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
 
December
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
Peri
6 Dec, 1931 18:04:22 UT
Perigee
Sun Dist 147,385,435 km
(-1.5%)
Sun Size 0.541°
(+1.5%)
Moon Dist 364,979 km
(-4.6%)
Moon Geo Size 0.545°
(+4.6%)
Moon Zenith Size 0.555°
(+4.6%)
Moon Magnitude -13.10
(+12.3%)
7
 
 
 
8
 
 
 
9
 
New
9 Dec, 1931 10:15:57 UT
New Moon
Sun Dist 147,334,321 km
(-1.5%)
Sun Size 0.541°
(+1.5%)
Moon Dist 369,653 km
(-3.4%)
Moon Geo Size 0.538°
(+3.2%)
Moon Zenith Size 0.548°
(+3.3%)
Moon Magnitude -13.07
(+9.6%)
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
 
Apo
18 Dec, 1931 11:40:09 UT
Apogee
Sun Dist 147,189,658 km
(-1.6%)
Sun Size 0.542°
(+1.6%)
Moon Dist 404,472 km
(+5.7%)
Moon Geo Size 0.492°
(-5.7%)
Moon Zenith Size 0.500°
(-5.7%)
Moon Magnitude -12.88
(-8.3%)
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
Full
24 Dec, 1931 23:23:24 UT
Full Moon
Sun Dist 147,123,763 km
(-1.7%)
Sun Size 0.542°
(+1.7%)
Moon Dist 386,493 km
(+1.0%)
Moon Geo Size 0.515°
(-1.3%)
Moon Zenith Size 0.524°
(-1.3%)
Moon Magnitude -12.98
(+0.5%)
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
 
31
 
 
 

Key to Fields

Full Moon
The moment in the Moon's orbit when it is exactly opposite the Earth from the Sun. From our perspective, the Moon appears completely illuminated at this point. In practice, the Moon will appear full for a day or so on either side of this moment.
New Moon
The moment in the Moon's orbit when it is exactly between the Earth and the Sun. From our perspective, the Moon appears completely dark at this point, but in any case it is too close to the Sun to be seen. In practice, the Moon will be invisible for a day or so on either side of this moment.
Perigee
The moment in the Moon's elliptical orbit when it is closest to the Earth.
Apogee
The moment in the Moon's elliptical orbit when it is farthest from the Earth.
Sun/Moon Distance
The distance from the centre of the Earth to the Sun/Moon, in km. The percentage figure represents how this distance compares to the average.
Sun Size
The angular diameter of the Sun, in degrees. The percentage figure represents the diameter of the Sun compared to the average.
Moon Geo Size
The angular diameter of the Moon, as it would be seen from the centre of the Earth ("geocentric"). This is essentially the same size that you would see if the Moon was on the horizon, for example at the start or end of a solar eclipse. The percentage figure represents the diameter of the Moon compared to the average geocentric diameter.
Moon Zenith Size
The angular diameter of the Moon, as it would be seen from directly beneath it; that is, when it is directly overhead. This is larger than the geocentric size, as you are closer to the Moon by half the diameter of the Earth. The percentage figure represents the diameter of the Moon compared to the average zenith diameter.
Moon Magnitude
The magnitude of the Moon. Magnitude is a measure of an object's brightness, used by astronomers. It uses a logarithmic scale, and counts backwards — smaller numbers, even down to negative numbers, indicate brighter objects. So, an object of magnitude -13 is 2.5 times brighter than an object of magnitude -12. Magnitudes shown here do not take account of the phase of the Moon; they represent what you would see if the Moon was full. The percentage figure represents the actual brightness of the Moon compared to its average brightness.
Eclipse
If an eclipse occurs in conjunction with the given Moon event, it is displayed as an icon. Click on this icon go to the Eclipse's page; you can hover over it to see data about the eclipse, including the angular diameter of the Moon at the place and time of maximum eclipse. This can be quite different to the Moon at the moment of New or Full Moon, as the place and time of maximum eclipse do not exactly match the place and time where the full Moon is exactly overhead. The percentage figure represents the diameter of the Moon compared to the average maximum eclipse Moon diameter.