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The periodicity and recurrance of solar (and lunar) eclipses is governed by the Saros cycle, a period of approximately 6,585.3 days (18 years 11 days 8 hours). When two eclipses are separated by a period of one Saros, they share a very similar geometry. The eclipses occur at the same node with the Moon at nearly the same distance from Earth and at the same time of year. Thus, the Saros is useful for organizing eclipses into families or series. Each series typically lasts 12 to 13 centuries and contains 70 or more eclipses.
Lunar eclipses of Saros series 121 all occur at the Moon’s descending node and the Moon moves northward with each eclipse. The series began with a partial eclipse south of the Ecliptic on 1029 Sep 25. The series will end with a partial eclipse north of the Ecliptic on 2526 Mar 29. The total duration of Saros series 121 is 1496.50 years. In summary:
First Eclipse = 1029 Sep 25 11:13:47 UT
Last Eclipse = 2526 Mar 29 22:54:40 UT
Duration of Saros 121 = 1496.50 Years
During Saros series 121, Earth experiences 84 lunar eclipses as follows:
All Eclipses = 84 = 100.0%
Penumbral (N) = 41 = 48.8%
Partial (P) = 14 = 16.7%
Total (T) = 29 = 34.5%
Umbral Eclipses = 43 = 51.2%
Central = 7 = 8.3%
Non-Central = 22 = 26.2%
Sequence of eclipses in Saros series 121: 20N 7P 29T 7P 21N
The longest and shortest eclipses of Saros series 121 as well as other eclipse extrema are listed below.
Longest Total Lunar Eclipse: 1660 Oct 18 Duration = 01h41m07s
Shortest Total Lunar Eclipse: 2021 May 26 Duration = 00h18m35s
Longest Partial Lunar Eclipse: 1498 Jul 03 Duration = 03h11m39s
Shortest Partial Lunar Eclipse: 1390 Apr 29 Duration = 00h14m23s
Largest Partial Lunar Eclipse: 1498 Jul 03 Magnitude = 0.8932
Smallest Partial Lunar Eclipse: 1390 Apr 29 Magnitude = 0.0037
Local circumstances at greatest eclipse for every eclipse of Saros series 121 are presented in the following catalog. For a detailed key and additional information about the catalog, see: Key to Catalog of Lunar Eclipses.
All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy.
Permission is freely granted to reproduce this data when accompanied by an acknowledgment:
"Eclipse Predictions by Fred Espenak, NASA/GSFC"
| Key to Catalog of Lunar Eclipses |
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Local Circumstances at Greatest Eclipse for Saros 121
U.T.
Greatest Saros Pen. Umb. S.D. S.D. GST Moon Moon
Date Eclipse Type # Gamma Mag. Mag. Par Tot (0 UT) RA Dec
h h °
1029 Sep 25 11:14 Nb 121 -1.592 0.008 -1.103 - - 0.6 0.51 1.7
1047 Oct 06 18:41 N 121 -1.556 0.075 -1.038 - - 1.4 1.18 6.0
1065 Oct 17 02:20 N 121 -1.528 0.128 -0.988 - - 2.1 1.86 10.1
1083 Oct 28 10:06 N 121 -1.505 0.171 -0.946 - - 2.8 2.57 13.8
1101 Nov 07 18:00 N 121 -1.489 0.201 -0.916 - - 3.5 3.31 17.0
1119 Nov 19 01:59 N 121 -1.475 0.226 -0.892 - - 4.2 4.07 19.5
1137 Nov 29 10:04 N 121 -1.466 0.243 -0.875 - - 5.0 4.85 21.3
1155 Dec 10 18:12 N 121 -1.458 0.257 -0.859 - - 5.7 5.65 22.1
1173 Dec 21 02:21 N 121 -1.450 0.270 -0.844 - - 6.4 6.46 22.1
1192 Jan 01 10:29 N 121 -1.441 0.285 -0.826 - - 7.1 7.25 21.1
1210 Jan 11 18:36 N 121 -1.430 0.304 -0.804 - - 7.9 8.04 19.2
1228 Jan 23 02:38 N 121 -1.415 0.329 -0.774 - - 8.6 8.79 16.6
1246 Feb 02 10:35 N 121 -1.395 0.364 -0.735 - - 9.3 9.52 13.4
1264 Feb 13 18:26 N 121 -1.369 0.408 -0.685 - - 10.0 10.23 9.7
1282 Feb 24 02:11 N 121 -1.337 0.464 -0.624 - - 10.7 10.91 5.6
1300 Mar 06 09:47 N 121 -1.298 0.533 -0.548 - - 11.5 11.58 1.4
1318 Mar 17 17:16 N 121 -1.252 0.613 -0.462 - - 12.2 12.25 -2.9
1336 Mar 28 00:38 N 121 -1.199 0.707 -0.362 - - 12.9 12.91 -7.1
1354 Apr 08 07:54 N 121 -1.141 0.811 -0.251 - - 13.6 13.58 -11.0
1372 Apr 18 15:01 N 121 -1.075 0.930 -0.127 - - 14.3 14.26 -14.7
1390 Apr 29 22:06 P 121 -1.005 1.055 0.004 7m - 15.1 14.96 -17.9
1408 May 10 05:05 P 121 -0.930 1.190 0.145 44m - 15.8 15.67 -20.5
1426 May 21 12:02 P 121 -0.852 1.330 0.290 61m - 16.5 16.41 -22.5
1444 May 31 18:57 P 121 -0.771 1.477 0.441 73m - 17.2 17.16 -23.7
1462 Jun 12 01:53 P 121 -0.689 1.624 0.592 83m - 17.9 17.93 -24.2
1480 Jun 22 08:50 P 121 -0.608 1.772 0.744 90m - 18.6 18.69 -23.7
1498 Jul 03 15:50 P 121 -0.527 1.918 0.893 96m - 19.4 19.44 -22.5
1516 Jul 13 22:54 T 121 -0.450 2.060 1.037 100m 15m 20.1 20.18 -20.6
1534 Jul 25 06:03 T 121 -0.375 2.196 1.175 104m 31m 20.8 20.89 -17.9
1552 Aug 04 13:19 T 121 -0.305 2.323 1.304 106m 39m 21.5 21.59 -14.7
1570 Aug 15 20:42 T+ 121 -0.240 2.443 1.425 108m 44m 22.2 22.27 -11.0
1588 Sep 05 04:13 T+ 121 -0.181 2.549 1.531 109m 47m 23.0 22.93 -7.0
1606 Sep 16 11:53 T+ 121 -0.129 2.645 1.628 109m 49m 23.7 23.59 -2.8
1624 Sep 26 19:43 T+ 121 -0.084 2.727 1.710 109m 50m 0.4 0.25 1.5
1642 Oct 08 03:41 T+ 121 -0.046 2.798 1.781 109m 50m 1.1 0.91 5.8
1660 Oct 18 11:50 T+ 121 -0.015 2.855 1.837 109m 51m 1.8 1.59 10.0
1678 Oct 29 20:06 T- 121 0.010 2.864 1.847 109m 50m 2.6 2.30 13.8
1696 Nov 09 04:30 T- 121 0.028 2.830 1.813 108m 50m 3.3 3.02 17.2
1714 Nov 21 13:02 T- 121 0.042 2.805 1.789 108m 50m 4.0 3.78 20.0
1732 Dec 01 21:40 T- 121 0.050 2.789 1.773 108m 50m 4.7 4.56 22.0
1750 Dec 13 06:22 T- 121 0.056 2.777 1.763 108m 50m 5.5 5.36 23.2
1768 Dec 23 15:07 T- 121 0.060 2.770 1.757 107m 50m 6.2 6.18 23.5
1787 Jan 03 23:53 Tm 121 0.063 2.763 1.752 107m 49m 6.9 6.99 22.8
1805 Jan 15 08:41 T- 121 0.066 2.756 1.747 107m 49m 7.6 7.79 21.2
1823 Jan 26 17:25 T- 121 0.073 2.742 1.737 107m 49m 8.3 8.56 18.9
1841 Feb 06 02:07 T- 121 0.081 2.725 1.723 107m 49m 9.1 9.31 15.8
1859 Feb 17 10:43 T- 121 0.095 2.698 1.700 106m 49m 9.8 10.03 12.2
1877 Feb 27 19:16 T- 121 0.112 2.664 1.670 106m 48m 10.5 10.73 8.2
1895 Mar 11 03:39 T- 121 0.138 2.615 1.626 106m 48m 11.2 11.41 4.0
1913 Mar 22 11:58 T- 121 0.167 2.559 1.574 105m 47m 12.0 12.08 -0.4
1931 Apr 02 20:08 T- 121 0.204 2.489 1.508 104m 45m 12.7 12.75 -4.6
1949 Apr 13 04:11 T- 121 0.247 2.408 1.431 103m 43m 13.4 13.42 -8.7
1967 Apr 24 12:06 T 121 0.297 2.314 1.341 102m 39m 14.1 14.10 -12.5
1985 May 04 19:56 T 121 0.352 2.212 1.243 100m 34m 14.8 14.80 -15.8
2003 May 16 03:40 T 121 0.412 2.100 1.134 97m 26m 15.6 15.51 -18.6
2021 May 26 11:18 T 121 0.477 1.979 1.016 94m 9m 16.3 16.24 -20.7
2039 Jun 06 18:53 P 121 0.546 1.852 0.891 90m - 17.0 16.99 -22.1
2057 Jun 17 02:24 P 121 0.617 1.722 0.762 85m - 17.7 17.75 -22.8
2075 Jun 28 09:53 P 121 0.690 1.587 0.628 79m - 18.4 18.50 -22.5
2093 Jul 08 17:21 P 121 0.763 1.452 0.493 71m - 19.2 19.25 -21.5
2111 Jul 21 00:49 P 121 0.836 1.319 0.359 62m - 19.9 19.99 -19.7
2129 Jul 31 08:20 P 121 0.907 1.189 0.229 51m - 20.6 20.70 -17.3
2147 Aug 11 15:52 P 121 0.976 1.063 0.100 34m - 21.3 21.40 -14.2
2165 Aug 21 23:28 N 121 1.042 0.945 -0.021 - - 22.0 22.08 -10.7
2183 Sep 02 07:09 N 121 1.103 0.832 -0.136 - - 22.8 22.74 -6.8
2201 Sep 13 14:56 N 121 1.160 0.731 -0.240 - - 23.5 23.40 -2.6
2219 Sep 24 22:48 N 121 1.211 0.638 -0.337 - - 0.2 0.05 1.7
2237 Oct 05 06:48 N 121 1.256 0.558 -0.421 - - 0.9 0.71 5.9
2255 Oct 16 14:55 N 121 1.296 0.488 -0.496 - - 1.6 1.38 10.1
2273 Oct 26 23:09 N 121 1.329 0.429 -0.559 - - 2.4 2.07 14.0
2291 Nov 07 07:30 N 121 1.356 0.381 -0.611 - - 3.1 2.79 17.6
2309 Nov 18 15:59 N 121 1.378 0.343 -0.653 - - 3.8 3.54 20.5
2327 Nov 30 00:33 N 121 1.395 0.314 -0.686 - - 4.5 4.32 22.8
2345 Dec 10 09:11 N 121 1.408 0.291 -0.712 - - 5.3 5.12 24.3
2363 Dec 21 17:53 N 121 1.418 0.276 -0.732 - - 6.0 5.94 24.8
2382 Jan 01 02:38 N 121 1.426 0.262 -0.748 - - 6.7 6.76 24.4
2400 Jan 12 11:24 N 121 1.433 0.251 -0.762 - - 7.4 7.57 23.1
2418 Jan 22 20:08 N 121 1.441 0.237 -0.777 - - 8.2 8.36 20.9
2436 Feb 03 04:50 N 121 1.450 0.221 -0.795 - - 8.9 9.13 18.0
2454 Feb 13 13:28 N 121 1.462 0.199 -0.818 - - 9.6 9.86 14.5
2472 Feb 24 22:00 N 121 1.479 0.169 -0.848 - - 10.3 10.57 10.6
2490 Mar 07 06:26 N 121 1.500 0.130 -0.888 - - 11.0 11.26 6.4
2508 Mar 18 14:44 N 121 1.527 0.081 -0.937 - - 11.8 11.94 2.0
2526 Mar 29 22:55 Ne 121 1.560 0.020 -0.997 - - 12.5 12.61 -2.3
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Eclipse Predictions & Webmaster: Fred Espenak Email: espenak@gsfc.nasa.gov Planteary Systems Laboratory - Code 693
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Last revised: 1999 Jun 3 - F. Espenak