Introduction

The Six Millennium Catalog of Lunar Eclipses is organized into a series of sixty 100-year web pages, each one covering a century of lunar eclipses. The 100-year table below covers the period -2099 to -2000 (2100 BCE to 2001 BCE) [1]. The date and time of each eclipse is given for the instant of Greatest Eclipse [2]. Each eclipse date links to a web page containing additional details 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 Catalog of Lunar Eclipses.

For an explanation of how eclipses are classified, see Lunar Eclipse Basics. The frequency of each eclipse type, the extremes in eclipse magnitude and duration, and other data for the century are presented in the Eclipse Statistics tables following the Catalog of Lunar Eclipses. To select a different century, visit the Index to Six Millennium Catalog of Lunar Eclipses.

Statistics for Lunar Eclipses: -2099 to -2000 (2100 BCE to 2001 BCE)

During the 21st century BCE [1], Earth experienced 230 lunar eclipses. The following table shows the number of eclipses of each type over this period.

Lunar Eclipses: -2099 - -2000
Eclipse Type	Symbol	Number	Percent
All Eclipses	-	230	100.0%
Penumbral	N	77	33.5%
Partial	P	68	29.6%
Total	T	85	37.0%

Total eclipses can be further classified as either central or non-central:

• Central - Some portion of the Moon passes directly through the center of Earth’s umbral shadow.
  These are the deepest and longest type of lunar eclipse.
• Non-Central - The Moon passes completely within Earth’s umbral shadow but misses the center of the umbra.

The statistical distribution of these classes during the 21st century BCE appears in the following table.

Total Eclipses
Classification	Number	Percent
All	85	100.0%
Central	32	37.6%
Non-Central	53	62.4%

There are two to five lunar eclipses in every calendar year. Statistics for the number of eclipses each year during the century are listed below.

Number of Eclipses Per Year
Number of Eclipses Per Year	Number of Years
2	73
3	24
4	3
5	0

The lunar eclipses with the longest and shortest durations, and with the largest and smallest magnitudes appear in the following two tables.

Extreme Durations of Lunar Eclipses
Extrema Type	Date	Duration
Longest Total Lunar Eclipse	-2062 May 05	01h46m30s
Shortest Total Lunar Eclipse	-2052 Oct 09	00h08m15s
Longest Partial Lunar Eclipse	-2095 Aug 06	03h26m43s
Shortest Partial Lunar Eclipse	-2007 Nov 20	00h05m42s
Longest Penumbral Lunar Eclipse	-2086 Aug 26	04h51m31s
Shortest Penumbral Lunar Eclipse	-2031 Sep 16	00h41m33s

Extreme Magnitudes of Lunar Eclipses
Extrema Type	Date	Umbral Magnitude	Penumbral Magnitude
Largest Total Lunar Eclipse	-2015 Apr 25	1.83371	-
Smallest Total Lunar Eclipse	-2052 Oct 09	1.00270	-
Largest Partial Lunar Eclipse	-2034 Oct 20	0.98817	-
Smallest Partial Lunar Eclipse	-2007 Nov 20	0.00059	-
Largest Penumbral Lunar Eclipse	-2086 Aug 26	-	1.07111
Smallest Penumbral Lunar Eclipse	-2031 Sep 16	-	0.02006

When four consecutive lunar eclipses are all total eclipses, the series is known as a tetrad. The following table lists the dates of all total eclipses in the 5 tetrads occurring during this century.

Lunar Eclipse Tetrad Series
Series Number	First Eclipse	Second Eclipse	Third Eclipse	Fourth Eclipse
1	-2084 Jan 11	-2084 Jul 05	-2084 Dec 30	-2083 Jun 25
2	-2066 Jan 21	-2066 Jul 17	-2065 Jan 10	-2065 Jul 06
3	-2048 Feb 02	-2048 Jul 27	-2047 Jan 21	-2047 Jul 17
4	-2030 Feb 12	-2030 Aug 07	-2029 Feb 01	-2029 Jul 28
5	-2019 Jan 11	-2019 Jul 08	-2019 Dec 31	-2018 Jun 27

During the century, 4 Saros series begin and 3 Saros series end. The table below gives the Saros series, number of eclipses in the series, the calendar date and whether it is the first or last eclipse in the series.

First or Last Eclipse in Saros Series
Saros Series	Number of Eclipses	Date	Pernumbral Magnitude	First/Last
-23	73	-2093 Jun 16	0.0391	Last
17	72	-2089 May 04	0.0959	First
18	73	-2078 Apr 02	0.0653	First
-22	73	-2064 May 27	0.1060	Last
25	88	-2038 Aug 06	0.0265	First
-21	74	-2035 May 06	0.0255	Last
19	73	-2031 Mar 24	0.0411	First

Footnotes

[1] The terms BCE and CE are abbreviations for "Before Common Era" and "Common Era," respectively. They are the secular equivalents to the BC and AD dating conventions. (See: Year Dating Conventions)

[2] Greatest eclipse is defined as the instant when the center of the Moon passes closest to the axis of Earth's shadows.

Index to Six Millennium Catolog of Lunar Eclipses

The links in the following table each open a web page containing a 100-year Catalog of Lunar Eclipses. Each line in a 100-year catalog lists the primary characteristics for a single eclipse; the eclipse date itself links to a web page containing further details, an eclipse diagram and map showing the geographic region of eclipse visibility.

Index to Six Millennium Catalog of Lunar Eclipses
Centuries
	-2999 to -2900	-2899 to -2800	-2799 to -2700	-2699 to -2600	-2599 to -2500
	-2499 to -2400	-2399 to -2300	-2299 to -2200	-2199 to -2100	-2099 to -2000
	-1999 to -1900	-1899 to -1800	-1799 to -1700	-1699 to -1600	-1599 to -1500
	-1499 to -1400	-1399 to -1300	-1299 to -1200	-1199 to -1100	-1099 to -1000
	-0999 to -0900	-0899 to -0800	-0799 to -0700	-0699 to -0600	-0599 to -0500
	-0499 to -0400	-0399 to -0300	-0299 to -0200	-0199 to -0100	-0099 to 0000
	0001 to 0100	0101 to 0200	0201 to 0300	0301 to 0400	0401 to 0500
	0501 to 0600	0601 to 0700	0701 to 0800	0801 to 0900	0901 to 1000
	1001 to 1100	1101 to 1200	1201 to 1300	1301 to 1400	1401 to 1500
	1501 to 1600	1601 to 1700	1701 to 1800	1801 to 1900	1901 to 2000
	2001 to 2100	2101 to 2200	2201 to 2300	2301 to 2400	2401 to 2500
	2501 to 2600	2601 to 2700	2701 to 2800	2801 to 2900	2901 to 3000

These web pages are part of the Six Millennium Catalog of Lunar Eclipses: -2999 to +3000

Links to Additional Lunar Eclipse Information

• Home - home page of EclipseWise with predictions for both solar and lunar eclipses

• Lunar Eclipses - primary page for lunar eclipse predictions
• Lunar Eclipse Links - detailed directory of links

• Six Millennium Catalog of Lunar Eclipses - covers the years -2999 to +3000 (3000 BCE to 3000 CE)
• Saros Catalog of Lunar Eclipses - covers Saros series -29 through 190
• Javascript Lunar Eclipse Explorer - calculate all lunar eclipses visible from a city

• Thousand Year Canon of Lunar Eclipses 1501 to 2500 - link to the publication

• MrEclipse.com - eclipse resources and tips on photography
• Lunar Eclipses for Beginners - a primer on lunar eclipse basics
• How to Photograph a Lunar Eclipse - instructions for imaging an eclipse of the Moon
• MrEclipse Photo Index - an index of lunar eclipse photographs

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 book 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.