All US markets and banks will be closed Monday Jan 21, 2019

USA (Jan 20)  In honor of Martin Luther King Jr., all US markets and banks will be closed on January 21, 2019…but will reopen Tuesday, January 22, 2019. However, all other global financial markets will be operating.

Martin Luther King Jr. (January 15, 1929 – April 4, 1968) was an American Baptist minister and activist who became the most visible spokesperson and leader in the civil rights movement from 1954 until his death in 1968. Born in Atlanta, King is best known for advancing civil rights through nonviolence and civil disobedience, tactics his Christian beliefs and the nonviolent activism of Mahatma Gandhi helped inspire.

Wikipedia