Qatar’s foreign ministry said the ceasefire between Israel and Hama s will go into effect at 0630 GMT on Sunday. The ceasefire will pause the fighting after 15 months of war and see the release of dozens of hostages held by the militants in the Gaza Strip and hundreds of Palestinians imprisoned by Israel.

CAIRO — The cease-fire between Hamas and Israel will go into effect Sunday at 8:30 a.m. local time, mediator Qatar announced Saturday, as families of hostages held in Gaza braced for news of loved ones, Palestinians prepared to receive freed detainees, and humanitarian groups rushed to set up a surge of aid.