The Natiity : Chapter 12-108

(- 128 × 20) + 2 = - 2558, (- 128 × [7+13]) + 2 = - 2558
Y= (- 128 ×X) + 2 2430 B.C. (X=19 days) 2302 B.C. (X=18 days) 2174 B.C. (X=17 days) 2046 B.C. (X=16 days) 1918 B.C. (X=15 days) 1790 B.C. (X=14 days) 1662 B.C. (X=13 days) 1534 B.C. (X=12 days) 1406 B.C. (X=11 days) 1278 B.C. (X=10 days) 1150 B.C. (X= 9 days) 1022 B.C. (X= 8 days) 894 B.C. (X= 7 days) 766 B.C. (X= 6 days) 638 B.C. (X= 5 days) 510 B.C. (X= 4 days) 382 B.C. (X= 3 days) 254 B.C. (X= 2 days) 126 B.C. (X= 1 day) A.D. 2. (X= 0 day
5 B.C. and A.D. 2 had the same range.
Therefore, I could rewrite the former letter like this
The old solar calendar of the ancestor of St. Abraham, in short, the old solar calendar of the Jews which began in about 2558 B.C. was twenty days longer in 5 B.C., than the old Gregorian calendar of the Astronomy, so the winter solstice shifted from January 1 to December 12.