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, 1991

Month Sun Mon Tue Wed Thu Fri Sat
January
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
Apo
12 Jan, 1991 10:58:07 UT
Apogee
Sun Dist 147,132,939 km
(-1.7%)
Sun Size 0.542°
(+1.7%)
Moon Dist 406,035 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.87
(-8.9%)
13
 
 
 
14
 
 
 
15
15 Jan, 1991 UT
Annular Solar Eclipse
Moon Size at
Max Eclipse		 0.503°
(-5.1%)
New
15 Jan, 1991 23:49:41 UT
New Moon
Sun Dist 147,162,065 km
(-1.6%)
Sun Size 0.542°
(+1.7%)
Moon Dist 401,399 km
(+4.9%)
Moon Geo Size 0.496°
(-4.9%)
Moon Zenith Size 0.504°
(-5.0%)
Moon Magnitude -12.89
(-6.9%)
 
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
Peri
28 Jan, 1991 08:36:50 UT
Perigee
Sun Dist 147,323,771 km
(-1.5%)
Sun Size 0.541°
(+1.5%)
Moon Dist 361,979 km
(-5.4%)
Moon Geo Size 0.550°
(+5.4%)
Moon Zenith Size 0.560°
(+5.5%)
Moon Magnitude -13.11
(+14.3%)
29
 
 
 
30
30 Jan, 1991 UT
Penumbral Lunar Eclipse
Moon Size at
Max Eclipse		 0.555°
(+4.7%)
Full
30 Jan, 1991 06:09:41 UT
Full Moon
Sun Dist 147,359,094 km
(-1.5%)
Sun Size 0.541°
(+1.5%)
Moon Dist 364,825 km
(-4.7%)
Moon Geo Size 0.546°
(+4.6%)
Moon Zenith Size 0.555°
(+4.7%)
Moon Magnitude -13.10
(+12.5%)
 
31
 
 
 
February
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
Apo
9 Feb, 1991 04:20:42 UT
Apogee
Sun Dist 147,591,695 km
(-1.4%)
Sun Size 0.540°
(+1.4%)
Moon Dist 405,042 km
(+5.9%)
Moon Geo Size 0.491°
(-5.8%)
Moon Zenith Size 0.499°
(-5.9%)
Moon Magnitude -12.87
(-9.1%)
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
New
14 Feb, 1991 17:31:47 UT
New Moon
Sun Dist 147,747,029 km
(-1.3%)
Sun Size 0.540°
(+1.3%)
Moon Dist 392,260 km
(+2.5%)
Moon Geo Size 0.507°
(-2.7%)
Moon Zenith Size 0.516°
(-2.8%)
Moon Magnitude -12.93
(-3.2%)
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
Peri
25 Feb, 1991 01:09:15 UT
Perigee
Sun Dist 148,067,916 km
(-1.0%)
Sun Size 0.539°
(+1.0%)
Moon Dist 367,585 km
(-3.9%)
Moon Geo Size 0.542°
(+3.8%)
Moon Zenith Size 0.551°
(+3.9%)
Moon Magnitude -13.07
(+9.7%)
26
 
 
 
27
 
 
 
28
 
Full
28 Feb, 1991 18:24:37 UT
Full Moon
Sun Dist 148,197,238 km
(-1.0%)
Sun Size 0.538°
(+0.9%)
Moon Dist 374,680 km
(-2.1%)
Moon Geo Size 0.531°
(+1.9%)
Moon Zenith Size 0.540°
(+1.9%)
Moon Magnitude -13.03
(+5.4%)
 
March
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
Apo
9 Mar, 1991 00:57:23 UT
Apogee
Sun Dist 148,513,094 km
(-0.7%)
Sun Size 0.537°
(+0.7%)
Moon Dist 404,283 km
(+5.7%)
Moon Geo Size 0.492°
(-5.6%)
Moon Zenith Size 0.500°
(-5.7%)
Moon Magnitude -12.86
(-9.8%)
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
New
16 Mar, 1991 08:10:37 UT
New Moon
Sun Dist 148,809,632 km
(-0.5%)
Sun Size 0.536°
(+0.5%)
Moon Dist 381,183 km
(-0.4%)
Moon Geo Size 0.522°
(+0.1%)
Moon Zenith Size 0.531°
(+0.1%)
Moon Magnitude -12.98
(+1.0%)
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
Peri
22 Mar, 1991 04:49:33 UT
Perigee
Sun Dist 149,049,776 km
(-0.4%)
Sun Size 0.535°
(+0.4%)
Moon Dist 369,900 km
(-3.3%)
Moon Geo Size 0.538°
(+3.2%)
Moon Zenith Size 0.547°
(+3.2%)
Moon Magnitude -13.04
(+6.9%)
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
Full
30 Mar, 1991 07:17:27 UT
Full Moon
Sun Dist 149,388,969 km
(-0.2%)
Sun Size 0.534°
(+0.1%)
Moon Dist 385,866 km
(+0.8%)
Moon Geo Size 0.516°
(-1.1%)
Moon Zenith Size 0.524°
(-1.1%)
Moon Magnitude -12.95
(-2.2%)
 
31
 
 
 
April
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
Apo
5 Apr, 1991 21:07:13 UT
Apogee
Sun Dist 149,674,971 km
(+0.0%)
Sun Size 0.533°
(-0.1%)
Moon Dist 404,309 km
(+5.7%)
Moon Geo Size 0.492°
(-5.6%)
Moon Zenith Size 0.500°
(-5.7%)
Moon Magnitude -12.84
(-11.2%)
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
New
14 Apr, 1991 19:37:37 UT
New Moon
Sun Dist 150,061,656 km
(+0.3%)
Sun Size 0.531°
(-0.3%)
Moon Dist 370,636 km
(-3.1%)
Moon Geo Size 0.537°
(+3.0%)
Moon Zenith Size 0.546°
(+3.0%)
Moon Magnitude -13.02
(+5.1%)
 
15
 
 
 
16
 
 
 
17
 
 
Peri
17 Apr, 1991 17:12:41 UT
Perigee
Sun Dist 150,182,093 km
(+0.4%)
Sun Size 0.531°
(-0.4%)
Moon Dist 365,439 km
(-4.5%)
Moon Geo Size 0.545°
(+4.4%)
Moon Zenith Size 0.554°
(+4.5%)
Moon Magnitude -13.05
(+7.9%)
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
Full
28 Apr, 1991 20:58:28 UT
Full Moon
Sun Dist 150,624,331 km
(+0.7%)
Sun Size 0.529°
(-0.7%)
Moon Dist 396,113 km
(+3.5%)
Moon Geo Size 0.503°
(-3.7%)
Moon Zenith Size 0.511°
(-3.7%)
Moon Magnitude -12.87
(-8.7%)
 
29
 
 
 
30
 
 
 
May
1
 
 
 
2
 
 
 
3
 
 
Apo
3 May, 1991 14:37:32 UT
Apogee
Sun Dist 150,806,572 km
(+0.8%)
Sun Size 0.529°
(-0.8%)
Moon Dist 405,037 km
(+5.9%)
Moon Geo Size 0.491°
(-5.8%)
Moon Zenith Size 0.499°
(-5.9%)
Moon Magnitude -12.82
(-12.9%)
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
New
14 May, 1991 04:35:48 UT
New Moon
Sun Dist 151,186,083 km
(+1.0%)
Sun Size 0.528°
(-1.0%)
Moon Dist 362,521 km
(-5.3%)
Moon Geo Size 0.549°
(+5.3%)
Moon Zenith Size 0.559°
(+5.4%)
Moon Magnitude -13.06
(+8.2%)
 
15
 
 
Peri
15 May, 1991 16:41:28 UT
Perigee
Sun Dist 151,234,700 km
(+1.1%)
Sun Size 0.527°
(-1.1%)
Moon Dist 360,624 km
(-5.8%)
Moon Geo Size 0.552°
(+5.8%)
Moon Zenith Size 0.562°
(+5.9%)
Moon Magnitude -13.07
(+9.3%)
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
Full
28 May, 1991 11:36:34 UT
Full Moon
Sun Dist 151,594,879 km
(+1.3%)
Sun Size 0.526°
(-1.3%)
Moon Dist 403,381 km
(+5.4%)
Moon Geo Size 0.493°
(-5.4%)
Moon Zenith Size 0.501°
(-5.5%)
Moon Magnitude -12.82
(-13.1%)
 
29
 
 
 
30
 
 
 
31
 
 
Apo
31 May, 1991 02:53:42 UT
Apogee
Sun Dist 151,660,275 km
(+1.4%)
Sun Size 0.526°
(-1.4%)
Moon Dist 405,870 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.80
(-14.2%)
June
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
New
12 Jun, 1991 12:05:57 UT
New Moon
Sun Dist 151,915,783 km
(+1.5%)
Sun Size 0.525°
(-1.5%)
Moon Dist 358,034 km
(-6.4%)
Moon Geo Size 0.556°
(+6.6%)
Moon Zenith Size 0.566°
(+6.7%)
Moon Magnitude -13.07
(+9.9%)
 
13
 
 
Peri
13 Jun, 1991 00:25:08 UT
Perigee
Sun Dist 151,923,842 km
(+1.5%)
Sun Size 0.525°
(-1.5%)
Moon Dist 357,781 km
(-6.5%)
Moon Geo Size 0.556°
(+6.7%)
Moon Zenith Size 0.566°
(+6.8%)
Moon Magnitude -13.07
(+10.0%)
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
 
 
26
 
 
 
27
27 Jun, 1991 UT
Penumbral Lunar Eclipse
Moon Size at
Max Eclipse		 0.498°
(-6.2%)
Full
27 Jun, 1991 02:58:24 UT
Full Moon
Sun Dist 152,066,579 km
(+1.6%)
Sun Size 0.524°
(-1.6%)
Moon Dist 406,226 km
(+6.2%)
Moon Geo Size 0.490°
(-6.1%)
Moon Zenith Size 0.498°
(-6.2%)
Moon Magnitude -12.80
(-14.8%)
Apo
27 Jun, 1991 07:23:32 UT
Apogee
Sun Dist 152,067,646 km
(+1.6%)
Sun Size 0.524°
(-1.6%)
Moon Dist 406,237 km
(+6.2%)
Moon Geo Size 0.490°
(-6.1%)
Moon Zenith Size 0.498°
(-6.2%)
Moon Magnitude -12.80
(-14.8%)
28
 
 
 
29
 
 
 
30
 
 
 
July
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
11 Jul, 1991 UT
Total Solar Eclipse
Moon Size at
Max Eclipse		 0.566°
(+6.8%)
New
11 Jul, 1991 19:06:01 UT
New Moon
Sun Dist 152,084,922 km
(+1.6%)
Sun Size 0.524°
(-1.6%)
Moon Dist 357,739 km
(-6.5%)
Moon Geo Size 0.556°
(+6.7%)
Moon Zenith Size 0.566°
(+6.8%)
Moon Magnitude -13.07
(+9.8%)
Peri
11 Jul, 1991 10:06:34 UT
Perigee
Sun Dist 152,086,581 km
(+1.6%)
Sun Size 0.524°
(-1.6%)
Moon Dist 357,602 km
(-6.5%)
Moon Geo Size 0.557°
(+6.7%)
Moon Zenith Size 0.567°
(+6.8%)
Moon Magnitude -13.07
(+9.9%)
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
Apo
24 Jul, 1991 11:11:19 UT
Apogee
Sun Dist 151,961,261 km
(+1.6%)
Sun Size 0.525°
(-1.6%)
Moon Dist 405,962 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.80
(-14.6%)
25
 
 
 
26
26 Jul, 1991 UT
Penumbral Lunar Eclipse
Moon Size at
Max Eclipse		 0.500°
(-5.7%)
Full
26 Jul, 1991 18:24:15 UT
Full Moon
Sun Dist 151,928,053 km
(+1.5%)
Sun Size 0.525°
(-1.5%)
Moon Dist 404,091 km
(+5.6%)
Moon Geo Size 0.493°
(-5.6%)
Moon Zenith Size 0.500°
(-5.7%)
Moon Magnitude -12.81
(-13.8%)
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
 
31
 
 
 
August
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
 
 
8
 
 
Peri
8 Aug, 1991 18:09:05 UT
Perigee
Sun Dist 151,687,090 km
(+1.4%)
Sun Size 0.526°
(-1.4%)
Moon Dist 360,098 km
(-5.9%)
Moon Geo Size 0.553°
(+6.0%)
Moon Zenith Size 0.563°
(+6.1%)
Moon Magnitude -13.06
(+8.9%)
9
 
 
 
10
 
New
10 Aug, 1991 02:27:36 UT
New Moon
Sun Dist 151,655,375 km
(+1.4%)
Sun Size 0.526°
(-1.4%)
Moon Dist 361,655 km
(-5.5%)
Moon Geo Size 0.550°
(+5.5%)
Moon Zenith Size 0.560°
(+5.6%)
Moon Magnitude -13.05
(+8.0%)
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
Apo
20 Aug, 1991 22:35:04 UT
Apogee
Sun Dist 151,352,697 km
(+1.2%)
Sun Size 0.527°
(-1.2%)
Moon Dist 405,157 km
(+5.9%)
Moon Geo Size 0.491°
(-5.8%)
Moon Zenith Size 0.499°
(-5.9%)
Moon Magnitude -12.81
(-13.6%)
21
 
 
 
22
 
 
 
23
 
 
 
24
 
 
 
25
 
Full
25 Aug, 1991 09:07:10 UT
Full Moon
Sun Dist 151,212,198 km
(+1.1%)
Sun Size 0.527°
(-1.1%)
Moon Dist 397,424 km
(+3.9%)
Moon Geo Size 0.501°
(-4.0%)
Moon Zenith Size 0.509°
(-4.0%)
Moon Magnitude -12.86
(-10.0%)
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
 
31
 
 
 
September
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
Peri
5 Sep, 1991 19:27:03 UT
Perigee
Sun Dist 150,821,816 km
(+0.8%)
Sun Size 0.529°
(-0.8%)
Moon Dist 364,658 km
(-4.7%)
Moon Geo Size 0.546°
(+4.7%)
Moon Zenith Size 0.555°
(+4.7%)
Moon Magnitude -13.05
(+7.4%)
6
 
 
 
7
 
 
 
8
 
New
8 Sep, 1991 11:00:51 UT
New Moon
Sun Dist 150,722,919 km
(+0.7%)
Sun Size 0.529°
(-0.7%)
Moon Dist 369,261 km
(-3.5%)
Moon Geo Size 0.539°
(+3.3%)
Moon Zenith Size 0.548°
(+3.4%)
Moon Magnitude -13.02
(+4.9%)
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
Apo
17 Sep, 1991 15:23:28 UT
Apogee
Sun Dist 150,354,029 km
(+0.5%)
Sun Size 0.530°
(-0.5%)
Moon Dist 404,345 km
(+5.7%)
Moon Geo Size 0.492°
(-5.6%)
Moon Zenith Size 0.500°
(-5.7%)
Moon Magnitude -12.83
(-12.1%)
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
Full
23 Sep, 1991 22:40:03 UT
Full Moon
Sun Dist 150,089,896 km
(+0.3%)
Sun Size 0.531°
(-0.3%)
Moon Dist 387,576 km
(+1.3%)
Moon Geo Size 0.514°
(-1.5%)
Moon Zenith Size 0.522°
(-1.6%)
Moon Magnitude -12.93
(-4.0%)
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
 
October
1
 
 
 
2
 
 
Peri
2 Oct, 1991 18:05:03 UT
Perigee
Sun Dist 149,721,788 km
(+0.1%)
Sun Size 0.533°
(-0.1%)
Moon Dist 369,418 km
(-3.5%)
Moon Geo Size 0.539°
(+3.3%)
Moon Zenith Size 0.548°
(+3.4%)
Moon Magnitude -13.04
(+6.2%)
3
 
 
 
4
 
 
 
5
 
 
 
6
 
 
 
7
 
New
7 Oct, 1991 21:38:47 UT
New Moon
Sun Dist 149,503,425 km
(-0.1%)
Sun Size 0.533°
(+0.1%)
Moon Dist 379,449 km
(-0.8%)
Moon Geo Size 0.525°
(+0.6%)
Moon Zenith Size 0.533°
(+0.6%)
Moon Magnitude -12.98
(+1.0%)
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
 
13
 
 
 
14
 
 
 
15
 
 
Apo
15 Oct, 1991 11:01:47 UT
Apogee
Sun Dist 149,175,636 km
(-0.3%)
Sun Size 0.535°
(+0.3%)
Moon Dist 404,165 km
(+5.6%)
Moon Geo Size 0.493°
(-5.6%)
Moon Zenith Size 0.500°
(-5.7%)
Moon Magnitude -12.85
(-10.6%)
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
 
 
22
 
 
 
23
 
Full
23 Oct, 1991 11:08:08 UT
Full Moon
Sun Dist 148,835,485 km
(-0.5%)
Sun Size 0.536°
(+0.5%)
Moon Dist 376,498 km
(-1.6%)
Moon Geo Size 0.529°
(+1.4%)
Moon Zenith Size 0.538°
(+1.4%)
Moon Magnitude -13.01
(+3.5%)
 
24
 
 
 
25
 
 
 
26
 
 
 
27
 
 
Peri
27 Oct, 1991 15:51:35 UT
Perigee
Sun Dist 148,666,712 km
(-0.6%)
Sun Size 0.536°
(+0.6%)
Moon Dist 368,406 km
(-3.7%)
Moon Geo Size 0.540°
(+3.6%)
Moon Zenith Size 0.550°
(+3.6%)
Moon Magnitude -13.06
(+8.3%)
28
 
 
 
29
 
 
 
30
 
 
 
31
 
 
 
November
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
New
6 Nov, 1991 11:10:50 UT
New Moon
Sun Dist 148,295,066 km
(-0.9%)
Sun Size 0.538°
(+0.9%)
Moon Dist 390,474 km
(+2.0%)
Moon Geo Size 0.510°
(-2.3%)
Moon Zenith Size 0.518°
(-2.3%)
Moon Magnitude -12.94
(-3.1%)
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
 
11
 
 
 
12
 
 
Apo
12 Nov, 1991 07:32:50 UT
Apogee
Sun Dist 148,083,142 km
(-1.0%)
Sun Size 0.539°
(+1.0%)
Moon Dist 404,812 km
(+5.8%)
Moon Geo Size 0.492°
(-5.7%)
Moon Zenith Size 0.499°
(-5.8%)
Moon Magnitude -12.86
(-9.6%)
13
 
 
 
14
 
 
 
15
 
 
 
16
 
 
 
17
 
 
 
18
 
 
 
19
 
 
 
20
 
 
 
21
 
Full
21 Nov, 1991 22:56:15 UT
Full Moon
Sun Dist 147,766,418 km
(-1.2%)
Sun Size 0.540°
(+1.2%)
Moon Dist 366,367 km
(-4.3%)
Moon Geo Size 0.543°
(+4.2%)
Moon Zenith Size 0.553°
(+4.2%)
Moon Magnitude -13.08
(+10.9%)
 
22
 
 
 
23
 
 
 
24
 
 
Peri
24 Nov, 1991 02:20:43 UT
Perigee
Sun Dist 147,704,651 km
(-1.3%)
Sun Size 0.540°
(+1.3%)
Moon Dist 362,941 km
(-5.2%)
Moon Geo Size 0.548°
(+5.1%)
Moon Zenith Size 0.558°
(+5.2%)
Moon Magnitude -13.10
(+13.1%)
25
 
 
 
26
 
 
 
27
 
 
 
28
 
 
 
29
 
 
 
30
 
 
 
December
1
 
 
 
2
 
 
 
3
 
 
 
4
 
 
 
5
 
 
 
6
 
New
6 Dec, 1991 03:56:13 UT
New Moon
Sun Dist 147,413,307 km
(-1.5%)
Sun Size 0.541°
(+1.5%)
Moon Dist 400,028 km
(+4.5%)
Moon Geo Size 0.498°
(-4.6%)
Moon Zenith Size 0.506°
(-4.7%)
Moon Magnitude -12.90
(-6.5%)
 
7
 
 
 
8
 
 
 
9
 
 
 
10
 
 
Apo
10 Dec, 1991 01:51:34 UT
Apogee
Sun Dist 147,334,839 km
(-1.5%)
Sun Size 0.541°
(+1.5%)
Moon Dist 405,822 km
(+6.1%)
Moon Geo Size 0.490°
(-6.0%)
Moon Zenith Size 0.498°
(-6.1%)
Moon Magnitude -12.87
(-9.1%)
11
 
 
 
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21
21 Dec, 1991 UT
Partial Lunar Eclipse
Moon Size at
Max Eclipse		 0.564°
(+6.3%)
Full
21 Dec, 1991 10:23:08 UT
Full Moon
Sun Dist 147,163,758 km
(-1.6%)
Sun Size 0.542°
(+1.7%)
Moon Dist 359,225 km
(-6.1%)
Moon Geo Size 0.554°
(+6.2%)
Moon Zenith Size 0.564°
(+6.3%)
Moon Magnitude -13.13
(+16.3%)
 
22
 
 
Peri
22 Dec, 1991 09:29:15 UT
Perigee
Sun Dist 147,154,363 km
(-1.6%)
Sun Size 0.542°
(+1.7%)
Moon Dist 358,351 km
(-6.3%)
Moon Geo Size 0.555°
(+6.5%)
Moon Zenith Size 0.565°
(+6.6%)
Moon Magnitude -13.14
(+16.9%)
23
 
 
 
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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.