They began their departure from Egypt on Friday morning, April 25, still eating the unleavened bread made in haste, through Tuesday evening, April 29, which ended the seven-day feast. One week later, the two-day crossing of the Red Sea began.
Israel left Egypt on Friday morning, on their way to pick up the body of Joseph, in the town of Succoth. On Sunday morning, they opened the tomb and obtained the mummy of Joseph. This served as the initial First Fruits Offering. Fifty days later, Yehovah spoke to the people from Mt.Sinai on Sunday, June 15th, in the year 1598 BC.