For example ...
- On April 30, 1492, Christopher Columbus was given his commission of exploration from Spain. He didn't depart on his historic voyage until August.
- On April 30, 1789, George Washington was sworn in as the first president of the United States.
- On April 30, 1803, the United States bought the Louisiana Territory from France.
- On April 30, 1945, Adolf Hitler and Eva Braun committed suicide in the Führerbunker in Berlin, one day after they were married.
- On April 30, 1973, President Richard Nixon announced that White House aides H.R. Haldeman and John Ehrlichman had resigned because of the Watergate revelations. Nearly a year later to the day, Nixon announced the release of edited transcripts of his subpoenaed tapes.
- On April 30, 1975, Communist forces seized Saigon in Vietnam, and American newscasts carried footage of South Vietnamese citizens trying to climb on board an American helicopter during the evacuation.