The Sumerian King List: Reigns, the Flood, and Biblical Comparisons

The Sumerian King List places the Flood at a great turning point. Before it stand eight kings whose reigns stretch across immense periods; afterward, kingship begins again. Genesis also measures the world on both sides of the Flood, but through a family line and the ages of its patriarchs:

“Now Noah was 600 years old when the floodwaters came upon the earth.”

— Genesis 7:6, BSB

The shared setting invites comparison. What happens when we examine the numbers in these two traditions—not just their size, but the way they form totals, divisions and calendar patterns?

This study introduces the approach used in the canonical chronology files. It begins with the reign figures, explains the chosen scale, and follows two comparisons far enough to make their structure visible. The supporting tables give the complete arithmetic.

Eight kings before the Flood

The Ashmolean Museum’s king-list prism, dated to about 1800 BC, preserves a tradition combining royal succession, the remote past and the transfer of kingship between cities. Its exceptionally long early reigns belong to that literary presentation.

In the selected eight-king sequence, the reigns are:

28800 + 36000 + 43200 + 28800 + 36000 + 28800 + 21000 + 18600 = 241200 years.

The Flood closes the sequence. These are reign lengths, whereas Genesis supplies patriarchal ages and lifespans. Keeping that distinction allows the numbers to be compared without treating every king as a historically identified biblical patriarch.

The old chart associates particular kings with patriarchs, including Alulim with Adam and En-men-dur-ana with Enoch. Those are proposed correspondences within the model. The starting point here is firmer and simpler: the actual numbers retained in the reign table.

Reading the large numbers at a scale of 360 to 1

The comparison uses a stated rule: 360 years in the king-list calculation correspond to one year in the scaled comparison. Thus a reign of 36000 becomes 100, and the complete pre-Flood total becomes 670:

36000 ÷ 360 = 100
241200 ÷ 360 = 670

The interpretive 360-to-1 scaling divides an SKL year count by 360. A reign of 36000 SKL years becomes 100 scaled years. The total of the eight pre-Flood reigns, 241200 SKL years, becomes 670 scaled years. The final pair is preserved exactly: 21000 plus 18600 equals 39600, and 39600 divided by 360 equals 110. The individual reigns are not rounded to force integer results. These are results under the model’s scaling rule, not measured historical reign durations. — Figure SK1. Under the interpretive 360:1 rule, 36000 SKL years yield 100 scaled years, while the eight-reign total 241200 yields 670. The final pair remains 21000 + 18600 = 39600, which yields 110 after division by 360. Neither individual reign is rounded. The arithmetic follows the stated rule; the rule itself is the chronological interpretation.
Sources: File 21 §1, Protocol 1.1; §6, Table 6.1.

The factor 360 comes from the schematic year. Biblical day-for-year passages, such as Numbers 14:34 and Ezekiel 4:6, provide an interpretive analogy; applying that analogy to the king list is a further proposal. The ancient text does not instruct us to divide its reigns by 360.

The rule is useful because it makes the chosen comparison transparent. We can see the source number, the operation and the result. We also retain inconvenient fractions: 21000 ÷ 360 = 58⅓, and 18600 ÷ 360 = 51⅔. Together, the last two reigns give 110, but neither should be silently rounded to make the pattern smoother.

Nor does the result 670 replace the normal MT Creation-to-Flood span of 1656 years. It is a scaled Sumerian total. The traditions retain their different contents while we examine their numerical relationships.

Two totals after the Flood

The first post-Flood dynasty, Kish, introduces a revealing difference. Adding the selected whole-year reign values displayed in the Oxford edition gives 17980. Its dynasty summary instead reports 24510 years, followed by 3 months and 3½ days. The 23-row table lets the reader inspect the addition.

The canonical model calls the two whole-year constructions SKL Short and SKL Long. It places their later boundaries at 2906 BC and 2856 BC, respectively. Working backward gives:

On smaller screens, scroll a wide table horizontally to see every column.

Model	Adopted later boundary	Whole-year duration	Calculated Flood boundary
Short	2906 BC	17980	20886 BC
Long	2856 BC	24510	27366 BC

These large BC labels are calculated positions in the comparative model. The later boundaries serve as its Babel comparisons; the king list itself does not identify its Kish boundary as the biblical Babel event. The months and days remain recorded in the appendix, outside these whole-year equations.

Now compare the two rows. Their Flood boundaries are 6480 years apart, while their later boundaries differ by 50 years in the opposite direction. The Long construction therefore begins earlier and ends later:

24510 − 17980 = 6530 = 6480 + 50.

The Short model runs from its SKL Flood beginning at 20886 BC to the terminal anchor at 2906 BC, spanning 17980 whole years. The Long model runs from 27366 BC to 2856 BC, spanning 24510 whole years. Relative to Short, the Long model starts 6480 years earlier, since 27366 minus 20886 equals 6480, and ends 50 years later, since 2906 minus 2856 equals 50. The span therefore increases by 6530 years, equal to 6480 plus 50. These are model coordinates in two declared states; the cards are not a proportional timeline. — Figure SK2. The Long span gains 6480 years at its beginning and 50 at its end, so 24510 − 17980 = 6530 = 6480 + 50. All endpoints are BC coordinates within the declared whole-year models. The two states retain their different anchors; the diagram does not turn either into an ordinary biblical Flood date.
Sources: File 34 §§4.1–4.4; File 21 §6, model-coordinate tables.

This explains why the model speaks of a 6480-year movement although the two durations differ by 6530. Both ends matter. In the broader canonical study, 6480 = 90 × 72 is read as a schematic precessional quarter-cycle, and 50 supplies a jubilee comparison. The exact arithmetic comes first; the calendrical interpretation explains why those components attract attention.

A connection with the 364-day calendar

The Short construction places Alulim, the first king, at 262086 BC. That position follows by adding the pre-Flood reigns to its Flood boundary:

20886 + 241200 = 262086.

Measure from that model coordinate to 6 BC, the nativity anchor used in this chronology. The resulting span is:

262086 − 6 = 262080 = 728 × 360.

At the chosen scale, the count is 728. Its numerical form, 364 + 364, echoes the day-count of two years in the 364-day calendar.

The canonical files also retain a declared +720 companion position. Genesis 11:10 supplies the two-year Flood reference behind this scaling motif; 2 × 360 = 720. Moving the early coordinate back by that amount gives 262806 BC, while the 6 BC endpoint stays fixed:

262806 − 6 = 262800 = 730 × 360.

Now the scaled count is 730 = 365 + 365, echoing two schematic 365-day years. The paired calculations bring the two calendar patterns together:

The nativity endpoint is held at 6 BC. The base Alulim coordinate 262086 BC gives a span of 262080 model years. Dividing by 360 gives 728 scaled years. The number 728 also appears in the day-count of two 364-day calendar years. Shifting the starting coordinate 720 years earlier, to 262806 BC, gives 262800 model years to the same 6 BC endpoint. Dividing by 360 gives 730 scaled years. The number 730 also appears in the day-count of two 365-day calendar years. These are numerical correspondences between scaled year-counts and calendar day-counts, not equal durations. The model spans differ by 720 years. The 365-day pattern is formal, not an exact physical solar-year measurement. — Figure SK3. With the 6 BC nativity anchor held fixed, the spans are 262086 − 6 = 262080 and 262806 − 6 = 262800 model years. Division by 360 yields 728 and 730 scaled years. These numbers echo the day-counts of two 364-day and two 365-day calendar years: 364 + 364 = 728 days and 365 + 365 = 730 days. This is a numerical correspondence, not an equality of durations. The model spans differ by exactly 720 years. The 6-year subtraction identifies the fixed endpoint; it is not a residual error.
Sources: File 21 §2, Protocol 2.4; §9, Theorem 9.1.

The numerical correspondence is precise: two scaled units match the two-day difference between the calendar totals. Those two scaled units represent 720 in the enlarged chronology. Here 365 is the whole-day solar-year schematic, not the exact length of the tropical year. The +720 is an explicitly chosen comparison state, not an addition to any king’s transmitted reign.

This relation brings the immense numbers into a familiar frame. It also shows why the fixed endpoint matters: the calculation concerns the span to 6 BC, not division of a BC label by itself. The calendar comparison table keeps both constructions together.

Reading the pattern without losing the text

The comparison rests on a few visible steps: preserve the reign figures, name the scale, identify the anchors, and then examine the resulting structure. The eight reigns total 241200; the two post-Flood constructions differ by 6480 + 50; and the first-king comparison opens the 364/365 calendar pair.

I read these relationships as part of a shared numerical language through which ancient traditions express order, judgment and renewal. Their theological significance does not require us to confuse a king-list reign with a patriarch’s life, or a generated coordinate with an independently dated historical event. The interesting question is how the distinct traditions arrange their numbers around recognizable forms of sacred time.

Continue with the technical appendix and complete tables, the detailed study, or the fuller treatment in File 21 and File 34.

Scripture quotations: Berean Standard Bible (BSB), public domain.

The Sumerian King List: Reigns, the Flood, and Biblical Comparisons

Eight kings before the Flood

Reading the large numbers at a scale of 360 to 1

One example reign

All eight pre-Flood reigns

The final two reigns remain exact

Two totals after the Flood

Short model

Long model

Long begins earlier

Long ends later

A connection with the 364-day calendar

Base comparison

Start shifted +720

Reading the pattern without losing the text