The State of the Union Address is the annual event where the President of the United States normally speaks to a joint session of the Congress (the House of Representatives and the Senate), about the status of the country. It is typically delivered on the last Tuesday in January, although there is no such provision written in law, and done so in the House chamber.
Modelled after the Speech from the Throne, the requirement for the address is written into the United States Constitution:
Calvin Coolidge's 1923 speech was the first to be broadcast on radio. The actual term "State of the Union" did not become widely used until after 1935 when Franklin Delano Roosevelt began using the phrase. Harry S. Truman's 1947 address was the first to be broadcast on television.