Old clock in sand with the words: It Happend in March

Browse Historical Events by Day: What Happened on March 9th?

Discover major events and cultural milestones that happened on this day — organized by year. Dates for earlier events may be approximate.

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49 BCE, March 9

Julius Caesar crosses the Rubicon River with his army, initiating a civil war in Rome.

1142 CE, March 9

Pierre Abélard, a French philosopher, dies.

1181 CE, March 9

Emperor Takakura of Japan abdicates the throne in favor of his son, Emperor Antoku.

1420 CE, March 9

The Council of Basel is convened to address reforms within the Catholic Church.

1531 CE, March 9

Henry VIII recognized as Supreme Head of the Church of England.

1945 CE, March 9

More than three hundred American bombers drop incendiary bombs on Tokyo during a three-hour raid A firestorm greater than that in Dresden erupts, killing 130,000 and displacing a million people. The raid was one of over a hundred such raids that eventually laid waste to sixty percent of the city's total area. More

2009 CE, March 9

The Kepler space observatory, designed to discover Earth-like planets orbiting other stars, is launched by NASA.

2012 CE, March 9

"The Hunger Games" film adaptation, based on Suzanne Collins' novel, is released in theaters, becoming a box office success.

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