Historical timeline for June 16

Upwards of 2,000,000 people participate in the 2019–20 Hong Kong protests, the largest in Hong Kong's history.

Shanghai Disneyland Park, the first Disney Park in mainland China, opens to the public.

American businessman Donald Trump announces his campaign to run for President of the United States in the upcoming election.

A multi-day cloudburst, centered on the North Indian state of Uttarakhand, causes devastating floods and landslides, becoming the country's worst natural disaster since the 2004 tsunami.

China successfully launches its Shenzhou 9 spacecraft, carrying three astronauts, including the first female Chinese astronaut Liu Yang, to the Tiangong-1 orbital module.

The United States Air Force's robotic Boeing X-37B spaceplane returns to Earth after a classified 469-day orbital mission.

Bhutan becomes the first country to institute a total ban on tobacco.

Padre Pio is canonized by the Roman Catholic Church.

The Secretary-General of the UN reports that Israel has complied with United Nations Security Council Resolution 425, 22 years after its issuance, and completely withdrawn from Lebanon. The Resolution does not encompass the Shebaa farms, which is claimed by Israel, Syria and Lebanon.

Fifty people are killed in the Daïat Labguer (M'sila) massacre in Algeria.

The Astronomy Picture of the Day website is launched.

Revolutions of 1989: Imre Nagy, the former Hungarian prime minister, is reburied in Budapest following the collapse of Communism in Hungary.

US President Ronald Reagan awards the Congressional Gold Medal to Ken Taylor, Canada's former ambassador to Iran, for helping six Americans escape from Iran during the hostage crisis of 1979–81; he is the first foreign citizen bestowed the honor.

Oracle Corporation is incorporated in Redwood Shores, California, as Software Development Laboratories (SDL), by Larry Ellison, Bob Miner and Ed Oates.

Soweto uprising: A non-violent march by 15,000 students in Soweto, South Africa, turns into days of rioting when police open fire on the crowd.

The largest single-site hydroelectric power project in Canada is inaugurated at Churchill Falls Generating Station.

In an attempt to resolve the Buddhist crisis in South Vietnam, a Joint Communique is signed between President Ngo Dinh Diem and Buddhist leaders.

Soviet Space Program: Vostok 6 mission: Cosmonaut Valentina Tereshkova becomes the first woman in space.

While on tour with the Kirov Ballet in Paris, Rudolf Nureyev defects from the Soviet Union.

Imre Nagy, Pál Maléter and other leaders of the 1956 Hungarian Uprising are executed.