What is the first month on hebrew calendar?

The first month on the Hebrew calendar is Nisan, which corresponds to March or April on the Gregorian calendar. It is a significant month in Jewish tradition and is marked by several important holidays and observances, including Passover, the seven-day festival of Unleavened Bread, and the counting of the Omer, a 49-day period of preparation leading up to the festival of Shavuot.