The US will honor the late former President Jimmy Carter, who died at age 100 on December 29. President Joe Biden declared January 9 as a day of mourning in an executive order – the same day as his official state funeral at the Washington National Cathedral.

Jan. 9, federal departments and agencies will close in observation of the former president’s death as he lays in state in Washington, D.C.

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.