On this day, in the Hebrew year 2448 (1312 BCE, seven days after the Exodus from Egypt), the Red Sea miraculously split and the Jewish people walked through on dry land. The sea then closed back, drowning Pharaoh and his troops. Until today, the final days of Passover are a special holiday, commemorating the splitting of the sea.


haggadah Section: Kadesh
Source: https://www.aish.com/dijh/Nisan_21.html