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April 16
ON THIS DAY

April 16

5 moments across history

1912

Harriet Quimby Flies Across the English Channel

Harriet Quimby Flies Across the English Channel

Harriet Quimby posed with the aircraft used in her pioneering cross-Channel flight

Harriet Quimby Flies Across the English Channel — detail

A Blériot monoplane in flight, representing Quimby’s historic Channel crossing

On April 16, 1912, Harriet Quimby became the first woman to fly across the English Channel. Flying a Blériot monoplane from Dover to near Calais, she completed the trip in difficult weather and poor visibility. The achievement made her one of the most celebrated aviators of her day.

1917

Lenin Returns to Petrograd from Exile

Lenin Returns to Petrograd from Exile

Lenin addressing supporters after his return to Petrograd in 1917

Lenin Returns to Petrograd from Exile — detail

Lenin later at work as revolutionary strategy took shape

Vladimir Lenin arrived at Petrograd’s Finland Station on April 16, 1917, after years in exile. His return energized the Bolshevik movement at a critical moment in Russia’s upheaval following the February Revolution. Within months, the political crisis would culminate in the October Revolution and the collapse of the provisional government.

1943

Albert Hofmann First Experiences LSD’s Effects

Albert Hofmann First Experiences LSD’s Effects

Chemist Albert Hofmann in the laboratory where he investigated ergot-derived compounds

Albert Hofmann First Experiences LSD’s Effects — detail

A structural diagram of LSD, the compound Hofmann famously discovered

On April 16, 1943, Swiss chemist Albert Hofmann accidentally absorbed a small amount of LSD-25 while working at Sandoz Laboratories in Basel. He became the first known person to experience the compound’s psychedelic effects. The incident marked the beginning of LSD’s unusual scientific and cultural history.

1972

Apollo 16 Launches to the Moon

Apollo 16 Launches to the Moon

Apollo 16 lifts off aboard a Saturn V rocket from Kennedy Space Center

Apollo 16 Launches to the Moon — detail

An Apollo 16 astronaut works on the lunar surface near the rover in the Descartes Highlands

NASA launched Apollo 16 on April 16, 1972, carrying John Young, Thomas Mattingly, and Charles Duke toward the Moon. It became the fifth crewed mission to land astronauts on the lunar surface and the first to explore the Descartes Highlands. The mission expanded scientific understanding of lunar geology during the final phase of Apollo exploration.