NBC inaugurates its regularly scheduled television service in New York City, broadcasting President Franklin D. Roosevelt's N.Y. World's Fair opening day ceremonial address. Date: April 30, 1939 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1939 📅 On This Day (Today)

The 1939–40 New York World's Fair opens. Date: April 30, 1939 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1939 📅 On This Day (Today)

World War II: The British submarine HMS Seraph surfaces near Huelva to cast adrift a dead man dressed as a courier and carrying false invasion plans. Date: April 30, 1943 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1943 📅 On This Day (Today)

World War II: Soviet soldiers raise the first Soviet flag over the Reichstag. The Victory Banner will be raised the next day. Date: April 30, 1945 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1945 📅 On This Day (Today)

World War II: Führerbunker: Adolf Hitler and Eva Braun commit suicide after being married for less than 40 hours. Date: April 30, 1945 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1945 📅 On This Day (Today)

In Nevada, Boulder Dam is renamed Hoover Dam. Date: April 30, 1947 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1947 📅 On This Day (Today)

In Bogotá, Colombia, the Organization of American States is established. Date: April 30, 1948 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1948 📅 On This Day (Today)

Former Vice President and Democratic Senator Alben Barkley dies during a speech in Virginia. Date: April 30, 1956 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1956 📅 On This Day (Today)