June 23: Facts & Historical Events On This Day

Britain voted to leave the European Union.

The UK is the only country to formally leave the EU.

NASA’s Mars Odyssey completed its 60,000th orbit around Mars.

Named after the best-selling novel, "2001: A Space Odyssey," the Mars Odyssey spacecraft originally entered orbit on October 23, 2001.

Reddit was founded in Medford, Massachusetts.

The Nintendo 64 went on sale in Japan three months before hitting US shelves.

Sonic the Hedgehog was released for the Sega Genesis in North America.

It was the first Sonic the Hedgehog game and allowed Sega Genesis to establish a foothold as a console in the 16-bit era. It was so popular that it spawned an entire franchise of games and paraphernalia.

The David Letterman Show aired its first episode on NBC-TV.

It ran for 90 episodes and concluded on October 24, 1980.

Civil Rights marchers in Canton, Mississippi, were dispersed by tear gas during the “March Against Fear.”

The "March Against Fear" was led by civil rights activist James Meredith who was the first African American to enroll at the University of Mississippi.

The FDA approved the first oral contraceptive pill called Enovid.

A 12-inch-deep hailstorm in Kansas became one of the US’ most expensive hailstorms.

On this day, the hailstorm caused $1.5 million in crop damage and $14 million in property damage.

Hitler had his first and only tour of Paris, ticking Eiffel Tower and Napoleon’s grave off his bucket list.

Duo Wiley Post and Harold Catty started their 15,474-mile around the world flight from Long Island, New York.

They completed the journey in a record 8 days, 15 hours, and 51 minutes.

Canada’s Banff National Park became the nation’s first national park.

The park, which was created under the Rocky Mountains Park Act, was initially called the Rocky Mountains Park.

The US Congress announced the United States Government Publishing Office formation.

The governmental branch would officially form on March 4, 1861.

John Jacob Astor established the Pacific Fur Company.

Astor's grandson was John Jacob "Jack" Astor IV, who perished during the Titanic disaster in 1912.