How often is the Inauguration Day held?
January, 20: Inauguration Day
Inauguration Day occurs in the USA once every four years on January 20. It occurs in the year after presidential elections have been held. The new terms of office of the president and vice-president officially begin at noon in Washington DC. On Inauguration Day the candidates, who won the elections in the previous year, are sworn into office as president and vice-president of the United States.