Stock market closures are rare outside of regular holidays. Other events that closed the market include Hurricane Sandy and the September 11 attacks.

Stock markets and the Postal Service will be closed on January 9 to mourn the death of Jimmy Carter. Here’s what else to know about the National Day of Mourning.

Jimmy Carter, the 39th President of the United States, will be eulogized at a state funeral Thursday at the National Cathedral and later by private family services and interment in Plains, Georgia.