XIV. Subtract the epact from 57, divide by 7, and keep the remainder, or 7,
if there be no remainder.
XV. To XIII. add VII., the dominical number, (and 7 besides, if XIV. be
greater than VII.,) and subtract XIV., the result is the day of March, or
if more than 31, subtract 31, and {367} the result is the day of April, on
which Easter Sunday falls. (39; Easter Day is April 8).
In the following examples, the several results leading to the final
conclusion are tabulated.
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GIVEN YEAR | 1592 | 1637 | 1723 | 1853 | 2018 | 4686
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I. | 1593 | 1638 | 1724 | 1854 | 2019 | 4687
II. | 398 | 409 | 430 | 463 | 504 | 1171
III. | --- | 0 | 1 | 2 | 4 | 30
IV. | --- | 0 | 0 | 0 | 1 | 7
V. | 1991 | 2047 | 2153 | 2315 | 2520 | 5835
VI. | 3 | 3 | 4 | 5 | 0 | 4
VII. | 4 | 4 | 3 | 2 | 7 | 3
VIII. | 16 | 4 | 14 | 11 | 5 | 13
IX. | --- | --- | 0 | 0 | 0 | 1
X. | 0 | 0 | 0 | 1 | 1 | 10
XI. | 16 | 4 | 24 | 21 | 15 | 13
XII. | 16 | 4 | 23 | 20 | 13 |0 say 30
XIII. | 29 | 41 | 22 | 25 | 32 | 45
XIV. | 4 | 2 | 4 | 7 | 7 | 6
XV. | 29 | 43 | 28 | 27 | 32 | 49
Easter Day |Mar.29|Apr.12|Mar.28|Mar.27|Apr.1 | Apr.18
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13. _Rule for determining Easter Day of the Antegregorian Calendar in any
year of the old style._ To the several parts of the rule are annexed, by
way of example, the results for the year 1287. The steps are numbered to
correspond with the steps of the Gregorian rule, so that it can be seen
what augmentations the latter requires.