Ten people are killed in a mass shooting at an adult education centre in Örebro, Sweden. Date: February 4, 2025 Read more on Wikipedia → 📅 Other events on February 4 📅 Events on this day in 2025 📅 On This Day (Today)

The Sixteenth Amendment to the United States Constitution is ratified, authorizing the Federal government to impose and collect an income tax. Date: February 3, 1913 Read more on Wikipedia → 📅 Other events on February 3 📅 Events on this day in 1913 📅 On This Day (Today)

The Centre Block of the Parliament buildings in Ottawa, Ontario, Canada burns down with the loss of seven lives. Date: February 3, 1916 Read more on Wikipedia → 📅 Other events on February 3 📅 Events on this day in 1916 📅 On This Day (Today)

World War I: The American entry into World War I begins when diplomatic relations with Germany are severed due to its unrestricted submarine warfare. Date: February 3, 1917 Read more on Wikipedia → 📅 Other events on February 3 📅 Events on this day in 1917 📅 On This Day (Today)

The Twin Peaks Tunnel in San Francisco, California begins service as the longest streetcar tunnel in the world at 11,920 feet (3,630 meters) long. Date: February 3, 1918 Read more on Wikipedia → 📅 Other events on February 3 📅 Events on this day in 1918 📅 On This Day (Today)

A revolt against the military dictatorship of Portugal breaks out at Porto. Date: February 3, 1927 Read more on Wikipedia → 📅 Other events on February 3 📅 Events on this day in 1927 📅 On This Day (Today)

The Communist Party of Vietnam is founded at a "Unification Conference" held in Kowloon, British Hong Kong. Date: February 3, 1930 Read more on Wikipedia → 📅 Other events on February 3 📅 Events on this day in 1930 📅 On This Day (Today)

The Hawke's Bay earthquake, New Zealand's worst natural disaster, kills 258. Date: February 3, 1931 Read more on Wikipedia → 📅 Other events on February 3 📅 Events on this day in 1931 📅 On This Day (Today)

Adolf Hitler announces that the expansion of Lebensraum into Eastern Europe, and its ruthless Germanisation, are the ultimate geopolitical objectives of Nazi foreign policy. Date: February 3, 1933 Read more on Wikipedia → 📅 Other events on February 3 📅 Events on this day in 1933 📅 On This Day (Today)

The SS Dorchester is sunk by a German U-boat. Only 230 of 902 men aboard survive. Date: February 3, 1943 Read more on Wikipedia → 📅 Other events on February 3 📅 Events on this day in 1943 📅 On This Day (Today)