Hawaii becomes a territory of the United States, with Sanford B. Dole as governor. Date: April 30, 1900 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1900 📅 On This Day (Today)

Albert Einstein completes his doctoral thesis at the University of Zurich. Date: April 30, 1905 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1905 📅 On This Day (Today)

The Federal Industrial Institute for Women opens in Alderson, West Virginia, as the first women's federal prison in the United States. Date: April 30, 1927 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1927 📅 On This Day (Today)

The Commonwealth of the Philippines holds a plebiscite for Filipino women on whether they should be extended the right to suffrage; over 90% would vote in the affirmative. Date: April 30, 1937 Read more on Wikipedia → 📅 Other events on April 30 📅 Events on this day in 1937 📅 On This Day (Today)

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)