American President Barack Obama will not be holding a Seder tomorrow night - unless he has persuaded Prime Minister David Cameron secretly to share some maror and matzah during his British visit.
The annual White House Seder will nevertheless be taking place, if a little later, after the President's return from his foreign travels. In fact, there is a biblical precedent for a delayed Passover. For those who missed the paschal offering first time, there was always Pesach Sheni, second Pesach, a month later.