what is year 0 in the jewish calendar
The Jewish calendar is based on the Metonic cycle of 19 years, of which 12 are common (non-leap) years of 12 months and 7 are leap years of 13 months. To determine whether a Jewish year is a leap year, one must find its position in the 19-year Metonic cycle. This position is calculated by dividing the Jewish year number by 19 and finding the remainder. For example, the Jewish year 5778 divided by 19 results in a remainder of 2, indicating that it is year 2 of the Metonic cycle. Since there is no year 0, a remainder of 0 indicates that the year is year 19 of the cycle.