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Babylonian and Seleucid Dates

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This page gives access to two conversion tables in Excel format (905 kB), with a copy in HTML format (2.57 MB), useful for determining the Julian equivalent of Babylonian and Seleucid civil dates in the Ptolemaic era. The dates of some important events early in the Ptolemaic era, such as the death of Alexander, and of a number of Seleucid events involving Ptolemaic princesses, can be determined from these tables.

Three tables are provided:

1) The standard conversion table generated by Parker & Dubberstein in 1956 (PD)
2) A corrected conversion table, consisting of PD overlaid by data from contemporary astronomical diaries, lunar tables, eclipse reports, eclipse predictions, goal year texts and horoscopes.
3) A difference table, showing the differences between the first two tables.

The second of these tables is also provided in a CSV text format.

The Sources of the Tables

The standard conversion table provided here was transcribed from:

R. A. Parker & W. H. Dubberstein, Babylonian Chronology 626 B.C. - A.D. 75 (Chicago, 1956 (1971 reprint))

Accuracy of transcription is not guaranteed. Please notify me if you find any errors. Note that the tables in the 1956 edition silently correct a significant number of errors in the original 1942 edition, which covered the period to A.D. 45, and the 1971 "reprint" also silently corrects some errors in the 1956 edition.

The data used to generate the corrected conversion table is published in the following sources:

My thanks to Ron Wallenfels for pointing out his article.

Again, accuracy of transcription is not guaranteed; please notify me if you find any errors. Difference analysis has been performed to ensure that this table is as close to PD as the contemporary data (as transcribed) will allow.

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