Why are the One Nation Calendar Coalition and the Jewish calendars different?
The major differences are: a. The modern Jewish calendar determinations fluctuate between the crescent and the concealed moon based on rabbinical rules of postponements that plots the holy days at convenient times. The O.N.C.C. consistently follows only the new crescent moon, a consistent indicator itself, for the onset of the month and allows subsequent dates/holy days to fall as they may. b. The Jewish calendar has two new years (the 7th month and the 1st month). The O.N.C.C. only acknowledges our new year at the time that the earth is renewed in the month of Abib. (Exodus 12:1-2) c. The Jewish calendar changes one-day observances of our holy days to two-day observances. The O.N.C.C. only seeks to fully understand and comply with the law around holy day observances, not add to it.