Returns true if Hebrew year is a leap year.
The Hebrew calendar is lunisolar: 7 years out of every 19-year (Metonic) cycle are leap years, in which a 13th month (Adar I) is inserted before Adar so that Nisan stays in the spring.
Hebrew year
true if year has 13 months
true
year
isLeapYear(5783); // falseisLeapYear(5784); // true Copy
isLeapYear(5783); // falseisLeapYear(5784); // true
Returns true if Hebrew year is a leap year.
The Hebrew calendar is lunisolar: 7 years out of every 19-year (Metonic) cycle are leap years, in which a 13th month (Adar I) is inserted before Adar so that Nisan stays in the spring.