Ahead of Pesach (Passover), the Feast of Unleavened Bread, the deadline for the last consumption of leavened products is 9:56 a.m. All leavened products which have not been sold to non-Jews must be burned by 11:17 a.m. Those observing the fast of the first born may not eat until 12:38 p.m. unless they have taken part in a siyum (end of) reading a masechet (tractate) of Talmud.
The holiday starts at 6:34 p.m. in Jerusalem.