Talk:Mathematics of the Jewish Calendar/The 19 year cycle

Did Adam 3761bc have this calendar? The 19-year cycle is one of sothic (Julian) years. This is how it started, not with seasonal years. It was developed because 76 sothic (Julian) years has 19 leap days. Obviously then 19 of 4 years (shifting 19 leap days) is then also 4 of 19-years (4 of 235 lunar months = 940m). This whole concept is preceded by 365-day calendar drifting a leap day every 4 years, the 365-day calendar falls back; or the stars are misunderstood to all leap or slide forward as if in orbit as one vaulted ceiling. Our 19 Julian years does not have a 4-year cycle proving it was derived from 76-year. The Egyptian calendar lacks 19 leap days in 76 years, when the stars (and sun) leap 19 days forward. Before a 19-year cycle can be created, then it must noted in the 365-day pattern. Compare 75-years (3x 25years = 3x 309m such as Abram) to 76 years (4x 19 = 4x235m). In 76 years, every 25 years are 309 lunar months (i.e. 25-year new moon is year 1, Thoth 1; to year 26, Thoth 1; to year 51, Thoth 1; to year 76, Thoth 1). Did Abram discover in 75 years that Egyptian 25-year (1 to 76) was followed by sothic Julian year (76 years or 1 to 77) and so took this to Pharaoh at age 75 or 76 (as Josephus says ALL astronomy is from Abram, given to Pharaoh)?

But in these 76 JULIAN years from year 1, Thoth 1; to year 77, the moon will be on Thoth 20 (an advance of 19 leap days). New moon Thoth 1, year 76; to next year 77, new moon Thoth 20, are 13 lunar months giving both the 25-year and 19-year an intercalary month. But thrice 309 lunar months (300 which are 12m per year, 25 yrs x12m, and 9 as intercalary of 30-day) are 927 lunar months (plus the 13 of year 77 makes the 940). While the 76 years from 1 to 77 can be divided by 4 units to be 235 lunar months (228m are 12 per year, 19 yrs x12m, plus 7 intercalary). Note that 25 years of 365-day has 9 intercalary versus 19 years with 4 or 5 leap days are 7 intercalary. This connects the two calendars in a relationship as nations of EXODUS who leave both Egypt and Persia go into the world to make the lunar calendar as sothic (Julian) in nature, without their having to create a leap day added to the extra 5 epagum days per 360-day year.

Indications imply China did this lunar calculating from 1513-1437bc (not from 2697-2637bc). Jewish year 1443bc is year 1 in Jewish cycle; though this is denied as Joshua's last year of 25 years (365-day with Egyptian lunar 25-year calendar), by being placed at 1249bc or 1244bc (with exodus 1313bc, Canaan 1273bc, 24 to 1249bc, or a 5-year conquest and 24 to 1244bc, none of which fall in traditional 19-year cycle from 1253-1234bc; and they don't care because they say it is Adam's 19-year from 3761bc. Another relationship exists in 475 years where 19-year cycle surpasses 25-year as 4 lunar months; the 25-year drifts back 119 leap days. In Usshers's chronology this is Peleg's death 2009bc to 1534bc (thru a 205-year Terah when Abram leaves at 75) to the year Moses is 40 and he disputes everything so that he is hated by both Egyptian and by Jew, labeling him not as a defender of truth, but one willing to murder to prove himself right. (Watchtower chronology is 2030-1554bc and moves the lunar month of Christmas Kayak 25 from May 6 back to January 8. Three day Osiris reborn moon is dated Kayak 23-24-25 (May 4-5-6) in 2029bc (the contradiction is these are 3 days from 1st crescent onward so that a last moon dying would be (Kayak 21-22-23 on May 1-2-3); but in 1554bc Kayak 23-24-25 is suppose to be new moon of January 6-7-8 and that too is instead a solar eclipse on January 4 of a reborn moon of January 3-4-5, on Kayak 20-21-22.  Significant is the sothic death for 74 days (May 6 to July 19) drifting backward to the solar death of winter solstice. What was the star Sothis ending becomes the sun ending. The January 6 of 2029bc and January 4 of 1554bc are both solar eclipses.)75.86.172.174 (discuss) 02:14, 21 December 2015 (UTC)

TWO things to note about 19-year Julian and 19-year Gregorian, taking a Julian date as constant will drift the date backward such as in about 1440 years as July 6 back to July 1 Julian. But taking a date as Gregorian the Gregorian date will drift forward as a DIFFERENT new moon whose date goes forward. So neither method holds to a constant exact date every 19 years. And this is frequently seen where traditional lunar calendar dates are not the new moon or same distance from lunar solar conjunctions. Many then clam the calendar was changed and adjusted as pleased. But the evidence indicates that Julian was the method and ignored the drift.