1. Start of month of Adar II (on leap years) on the Hebrew calendar

2. Israel is the only country in the world where life revolves around the Hebrew calendar.

3. Then, he borrowed the idea of a seven - day week and leap year from the Hebrew calendar.

4. The name Adar in Hebrew: אֲדָר Adar; from Akkadian Adaru; is the twelfth month of the year on the Hebrew calendar, roughly corresponding to the months of mid-February to mid-March in the Gregorian calendar