It is a lunar calendar adapted to the solar year, normally consisting of twelve months but having thirteen months in leap years, which occur seven times in every cycle of nineteen years. The years are reckoned from the Creation (which is placed at 3761 bc); the months are Nisan, Iyyar, Sivan, Thammuz, Ab, Elul, Tishri, Hesvan, Kislev, Tebet, Sebat, and Adar, with an intercalary month (First Adar) being added in leap years. The religious year begins with Nisan and ends with Adar; the civil year begins with Tishri and ends with Elul
- The sixth month of the Jewish calendar is called Adar, and in leap years there are two Adars called Adar I and Adar II.
- The Jewish calendar is a combined moon and sun calendar, unlike the conventional Western calendar.
- The Jewish calendar, a highly complex system, is ‘lunisolar ‘, where the years are solar and months lunar.
Definition of Jewish calendar in:
- The British & World English dictionary