Saros 66

Catalog of Lunar Eclipses of Saros 66

Fred Espenak

Introduction

The periodicity and recurrence of 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 two eclipses occur at the same node with the Moon at nearly the same distance from Earth and the same time of year due to a harmonic in three cycles of the Moon's orbit. 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. Every saros series begins with a number of penumbral lunar eclipses. The series will then produce several dozen partial eclipses, followed by several dozen total eclipses. The later portion of the series produces another set of partial eclipses before ending with a final group of penumbral eclipses.

Catalog of Lunar Eclipses of Saros 66

The table below lists the concise characteristics of every lunar eclipse belonging to Saros 66 . The date and time of each eclipse is given for the instant of Greatest Eclipse. For eclipses between the years -1999 to 3000, the calendar date links to a web page containing additional details along with a diagram of the eclipse geometry and a map showing the geographic region of eclipse visibility for that eclipse. A description of each parameter in the catalog table can be found in Key to Saros Catalog of Lunar Eclipses.

Catalog of Lunar Eclipses of Saros 66
Seq Num Rel Num Calendar Date TD of Greatest Eclipse ΔT

s
ΔT Sigma
s
Luna Num Ecl Type QSE Gamma Pen Mag Um Mag Pen Dur
m
Par Dur
m
Tot Dur
m
1-35 -0671-Aug-1209:59:19 19717 496 -33029 Nb t- 1.5753 0.0090-1.0732 29.7 - -
2-34 -0653-Aug-2316:59:14 19432 489 -32806 N t- 1.5208 0.1105-0.9746102.9 - -
3-33 -0635-Sep-0300:09:32 19150 482 -32583 N t- 1.4740 0.1978-0.8900136.7 - -
4-32 -0617-Sep-1407:29:16 18869 475 -32360 N t- 1.4341 0.2724-0.8182159.3 - -
5-31 -0599-Sep-2414:59:32 18590 468 -32137 N t- 1.4018 0.3327-0.7601175.0 - -
6-30 -0581-Oct-0522:38:52 18314 461 -31914 N t- 1.3762 0.3806-0.7141186.2 - -
7-29 -0563-Oct-1606:25:43 18039 454 -31691 N t- 1.3562 0.4180-0.6780194.3 - -
8-28 -0545-Oct-2714:20:44 17767 447 -31468 N t- 1.3420 0.4444-0.6524199.6 - -
9-27 -0527-Nov-0622:21:07 17497 440 -31245 N t- 1.3321 0.4625-0.6342203.0 - -
10-26 -0509-Nov-1806:26:30 17228 434 -31022 N t- 1.3253 0.4748-0.6212205.1 - -
11-25 -0491-Nov-2814:32:41 16931 427 -30799 N t- 1.3185 0.4864-0.6081206.9 - -
12-24 -0473-Dec-0922:41:18 16616 420 -30576 N t- 1.3131 0.4951-0.5970208.1 - -
13-23 -0455-Dec-2006:47:50 16311 414 -30353 N t- 1.3057 0.5071-0.5818209.8 - -
14-22 -0437-Dec-3114:51:58 16013 407 -30130 N h- 1.2954 0.5240-0.5611212.3 - -
15-21 -0418-Jan-1022:50:48 15724 401 -29907 N h- 1.2805 0.5490-0.5314216.1 - -
16-20 -0400-Jan-2206:44:57 15442 394 -29684 N h- 1.2609 0.5824-0.4929221.1 - -
17-19 -0382-Feb-0114:31:54 15167 388 -29461 N h- 1.2349 0.6274-0.4423227.6 - -
18-18 -0364-Feb-1222:11:38 14899 382 -29238 N h- 1.2023 0.6841-0.3796235.4 - -
19-17 -0346-Feb-2305:43:30 14637 375 -29015 N h- 1.1625 0.7540-0.3035244.4 - -
20-16 -0328-Mar-0513:08:13 14381 369 -28792 N h- 1.1162 0.8358-0.2153254.1 - -
21-15 -0310-Mar-1620:24:26 14131 363 -28569 N h- 1.0619 0.9321-0.1126264.5 - -
22-14 -0292-Mar-2703:34:38 13887 357 -28346 P h- 1.0017 1.0394 0.0009274.9 7.1 -
23-13 -0274-Apr-0710:38:19 13647 351 -28123 P h- 0.9351 1.1586 0.1262285.2 82.9 -
24-12 -0256-Apr-1717:38:28 13413 345 -27900 P h- 0.8645 1.2852 0.2585294.8116.0 -
25-11 -0238-Apr-2900:32:57 13183 339 -27677 P h- 0.7879 1.4230 0.4017303.9141.1 -
26-10 -0220-May-0907:27:05 12958 333 -27454 P h- 0.7099 1.5638 0.5473311.9160.4 -
27 -9 -0202-May-2014:18:26 12738 327 -27231 P h- 0.6279 1.7119 0.6999318.9176.4 -
28 -8 -0184-May-3021:12:24 12522 321 -27008 P h- 0.5471 1.8582 0.8502324.7188.8 -
29 -7 -0166-Jun-1104:06:00 12310 315 -26785 T a- 0.4646 2.0078 1.0031329.4198.9 8.8
30 -6 -0148-Jun-2111:05:33 12102 310 -26562 T a- 0.3858 2.1511 1.1491332.9206.3 58.1
31 -5 -0130-Jul-0218:08:17 11897 304 -26339 T a- 0.3082 2.2923 1.2926335.4211.9 77.3
32 -4 -0112-Jul-1301:18:06 11697 298 -26116 T+ p- 0.2355 2.4248 1.4269336.9215.7 88.5
33 -3 -0094-Jul-2408:33:59 11499 293 -25893 T+ p- 0.1668 2.5502 1.5535337.5218.0 95.5
34 -2 -0076-Aug-0315:58:51 11305 287 -25670 T+ pp 0.1047 2.6637 1.6678337.5219.1 99.3
35 -1 -0058-Aug-1423:31:58 11114 282 -25447 T+ pp 0.0485 2.7666 1.7711337.0219.3101.0
36 0 -0040-Aug-2507:14:05 10925 277 -25224 T- pp -0.0011 2.8536 1.8583336.0218.9101.2
37 1 -0022-Sep-0515:05:56 10740 271 -25001 T- pp -0.0434 2.7761 1.7807334.9218.0100.5
38 2 -0004-Sep-1523:07:28 10556 266 -24778 T- pp -0.0783 2.7120 1.7165333.6216.9 99.2
39 3 0014-Sep-2707:18:26 10375 261 -24555 T- pp -0.1061 2.6611 1.6655332.3215.8 97.7
40 4 0032-Oct-0715:38:04 10196 256 -24332 T- pp -0.1273 2.6222 1.6266331.1214.7 96.3
Catalog of Lunar Eclipses of Saros 66
Seq Num Rel Num Calendar Date TD of Greatest Eclipse ΔT

s
ΔT Sigma
s
Luna Num Ecl Type QSE Gamma Pen Mag Um Mag Pen Dur
m
Par Dur
m
Tot Dur
m
41 5 0050-Oct-1900:05:58 10019 250 -24109 T- -p -0.1425 2.5943 1.5988329.9213.7 95.1
42 6 0068-Oct-2908:40:56 9843 245 -23886 T- -p -0.1524 2.5759 1.5808328.9212.8 94.2
43 7 0086-Nov-0917:20:59 9669 240 -23663 T- -p -0.1587 2.5639 1.5697327.9212.2 93.5
44 8 0104-Nov-2002:05:57 9495 235 -23440 T- -p -0.1614 2.5582 1.5653326.9211.6 93.2
45 9 0122-Dec-0110:53:21 9323 230 -23217 T- -p -0.1625 2.5554 1.5642326.1211.2 93.0
46 10 0140-Dec-1119:41:56 9152 226 -22994 T- -p -0.1631 2.5530 1.5641325.2210.8 92.8
47 11 0158-Dec-2304:28:53 8980 221 -22771 T- -p -0.1658 2.5469 1.5607324.2210.4 92.6
48 12 0177-Jan-0213:14:09 8810 216 -22548 T- -p -0.1700 2.5375 1.5545323.2210.0 92.2
49 13 0195-Jan-1321:55:33 8639 211 -22325 T- -p -0.1776 2.5217 1.5422322.1209.5 91.6
50 14 0213-Jan-2406:31:10 8468 207 -22102 T- -p -0.1905 2.4961 1.5206320.9208.8 90.5
51 15 0231-Feb-0415:00:43 8297 202 -21879 T- -p -0.2086 2.4608 1.4893319.5207.8 88.9
52 16 0249-Feb-1423:23:08 8125 197 -21656 T- -p -0.2331 2.4137 1.4466318.0206.5 86.3
53 17 0267-Feb-2607:38:42 7953 193 -21433 T- -p -0.2635 2.3559 1.3929316.1204.8 82.6
54 18 0285-Mar-0815:45:25 7780 188 -21210 T -p -0.3014 2.2841 1.3254313.9202.5 77.0
55 19 0303-Mar-1923:45:39 7607 184 -20987 T -p -0.3452 2.2018 1.2470311.3199.4 68.9
56 20 0321-Mar-3007:38:05 7432 180 -20764 T -p -0.3959 2.1070 1.1559308.1195.3 56.3
57 21 0339-Apr-1015:24:19 7257 175 -20541 T -a -0.4520 2.0024 1.0546304.2190.0 34.3
58 22 0357-Apr-2023:04:07 7081 171 -20318 P -a -0.5138 1.8876 0.9426299.6183.3 -
59 23 0375-May-0206:39:45 6904 167 -20095 P -a -0.5793 1.7661 0.8233294.1174.8 -
60 24 0393-May-1214:11:32 6726 163 -19872 P -a -0.6483 1.6387 0.6976287.7164.3 -
61 25 0411-May-2321:39:42 6548 159 -19649 P -a -0.7205 1.5058 0.5657280.2151.0 -
62 26 0429-Jun-0305:06:47 6370 155 -19426 P -a -0.7936 1.3715 0.4318271.7134.7 -
63 27 0447-Jun-1412:32:53 6192 151 -19203 P -a -0.8676 1.2358 0.2957262.1113.7 -
64 28 0465-Jun-2420:00:24 6014 147 -18980 P -a -0.9402 1.1031 0.1621251.5 85.8 -
65 29 0483-Jul-0603:28:37 5837 143 -18757 P -a -1.0120 0.9723 0.0295239.7 37.3 -
66 30 0501-Jul-1611:01:06 5661 139 -18534 N -a -1.0801 0.8484-0.0966227.1 - -
67 31 0519-Jul-2718:37:20 5484 135 -18311 N -a -1.1450 0.7307-0.2172213.7 - -
68 32 0537-Aug-0702:18:35 5308 132 -18088 N -a -1.2055 0.6214-0.3298199.6 - -
69 33 0555-Aug-1810:05:45 5134 128 -17865 N -a -1.2609 0.5219-0.4332185.1 - -
70 34 0573-Aug-2817:59:47 4961 124 -17642 N -a -1.3103 0.4332-0.5260170.4 - -
71 35 0591-Sep-0902:01:36 4789 121 -17419 N -a -1.3533 0.3565-0.6071156.1 - -
72 36 0609-Sep-1910:09:36 4618 117 -17196 N -a -1.3913 0.2891-0.6791141.8 - -
73 37 0627-Sep-3018:26:25 4449 114 -16973 N -a -1.4219 0.2353-0.7374128.9 - -
74 38 0645-Oct-1102:49:44 4282 110 -16750 N -a -1.4471 0.1914-0.7859117.1 - -
75 39 0663-Oct-2211:20:51 4116 107 -16527 N -a -1.4659 0.1591-0.8225107.4 - -
76 40 0681-Nov-0119:56:20 3952 104 -16304 N -a -1.4809 0.1335-0.8522 98.8 - -
77 41 0699-Nov-1304:37:47 3789 100 -16081 N -a -1.4911 0.1167-0.8727 92.8 - -
78 42 0717-Nov-2313:21:34 3629 97 -15858 N -a -1.4991 0.1037-0.8891 87.8 - -
79 43 0735-Dec-0422:07:35 3472 94 -15635 N -a -1.5049 0.0945-0.9010 84.2 - -
80 44 0753-Dec-1506:53:13 3317 91 -15412 N -a -1.5107 0.0851-0.9128 80.1 - -
Catalog of Lunar Eclipses of Saros 66
Seq Num Rel Num Calendar Date TD of Greatest Eclipse ΔT

s
ΔT Sigma
s
Luna Num Ecl Type QSE Gamma Pen Mag Um Mag Pen Dur
m
Par Dur
m
Tot Dur
m
81 45 0771-Dec-2615:38:08 3165 88 -15189 N -a -1.5164 0.0755-0.9241 75.8 - -
82 46 0790-Jan-0600:19:01 3016 85 -14966 N -a -1.5251 0.0603-0.9407 68.0 - -
83 47 0808-Jan-1708:55:26 2870 82 -14743 N -a -1.5369 0.0390-0.9629 54.9 - -
84 48 0826-Jan-2717:25:17 2727 79 -14520 Ne -a -1.5534 0.0091-0.9934 26.6 - -

Statistics for Lunar Eclipses of Saros 66

Lunar eclipses of Saros 66 all occur at the Moon’s ascending node and the Moon moves southward with each eclipse. The series will begin with a penumbral eclipse near the northern edge of the penumbra on -0671 Aug 12. The series will end with a penumbral eclipse near the southern edge of the penumbra on 0826 Jan 27. The total duration of Saros series 66 is 1496.50 years.

Summary of Saros 66
First Eclipse -0671 Aug 12
Last Eclipse 0826 Jan 27
Series Duration 1496.50 Years
No. of Eclipses 84
Sequence 21N 7P 29T 8P 19N

Saros 66 is composed of 84 lunar eclipses as follows:

Lunar Eclipses of Saros 66
Eclipse Type Symbol Number Percent
All Eclipses - 84100.0%
PenumbralN 40 47.6%
PartialP 15 17.9%
TotalT 29 34.5%

The 84 lunar eclipses of Saros 66 occur in the order of 21N 7P 29T 8P 19N which corresponds to the following.

Sequence Order of Lunar Eclipses in Saros 66
Eclipse Type Symbol Number
Penumbral N 21
Partial P 7
Total T 29
Partial P 8
Penumbral N 19

The longest and shortest eclipses of Saros 66 as well as largest and smallest partial eclipses appear below.

Extreme Durations and Magnitudes of Lunar Eclipses of Saros 66
Extrema Type Date Duration Magnitude
Longest Total Lunar Eclipse -0040 Aug 2501h41m14s -
Shortest Total Lunar Eclipse -0166 Jun 1100h08m49s -
Longest Partial Lunar Eclipse -0184 May 3003h08m49s -
Shortest Partial Lunar Eclipse -0292 Mar 2700h07m04s -
Longest Penumbral Lunar Eclipse -0310 Mar 1604h24m28s -
Shortest Penumbral Lunar Eclipse 0826 Jan 2700h26m37s -
Largest Partial Lunar Eclipse 0357 Apr 20 - 0.94255
Smallest Partial Lunar Eclipse -0292 Mar 27 - 0.00088

Links to Additional Lunar Eclipse Predictions

Calendar

The Gregorian calendar (also called the Western calendar) is internationally the most widely used civil calendar. It is named for Pope Gregory XIII, who introduced it in 1582. On this website, the Gregorian calendar is used for all calendar dates from 1582 Oct 15 onwards. Before that date, the Julian calendar is used. For more information on this topic, see Calendar Dates.

The Julian calendar does not include the year 0. Thus the year 1 BCE is followed by the year 1 CE (See: BCE/CE Dating Conventions). This is awkward for arithmetic calculations. Years in this catalog are numbered astronomically and include the year 0. Historians should note there is a difference of one year between astronomical dates and BCE dates. Thus, the astronomical year 0 corresponds to 1 BCE, and astronomical year -1 corresponds to 2 BCE, etc..

Eclipse Predictions

The eclipse predictions presented here were generated using the JPL DE406 solar and lunar ephemerides. The lunar coordinates have been calculated with respect to the Moon's Center of Mass.

The largest uncertainty in the eclipse predictions is caused by fluctuations in Earth's rotation due primarily to tidal friction of the Moon. The resultant drift in apparent clock time is expressed as ΔT and is determined as follows:

  1. pre-1950's: ΔT calculated from empirical fits to historical records derived by Morrison and Stephenson (2004)
  2. 1955-present: ΔT obtained from published observations
  3. future: ΔT is extrapolated from current values weighted by the long term trend from tidal effects

A series of polynomial expressions have been derived to simplify the evaluation of ΔT for any time from -2999 to +3000. The uncertainty in ΔT over this period can be estimated from scatter in the measurements.

Acknowledgments

Some of the content on this web site is based on the books Five Millennium Canon of Lunar Eclipses: -1999 to +3000 and Thousand Year Canon of Lunar Eclipses 1501 to 2500. All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy.

Permission is granted to reproduce eclipse data when accompanied by a link to this page and an acknowledgment:

"Eclipse Predictions by Fred Espenak, www.EclipseWise.com"

The use of diagrams and maps is permitted provided that they are NOT altered (except for re-sizing) and the embedded credit line is NOT removed or covered.