The sixth Jewish month is called ADAR, which is a four-letter word. ADAR is the twelfth and final month of the Jewish calendar, and it usually falls in February or March. It is a month of celebration and joy, as it marks the end of the winter season and the beginning of spring. ADAR is also known as the month of Purim, a holiday that celebrates the deliverance of the Jewish people from a plot to destroy them in the ancient Persian Empire.