July 31st, 1139

Born on July 31st, 1139

Age in days, weeks and months
Wow, over 323,000 days old!

Why not celebrate an alternative birthday? In 78 days, exactly on August 29th, 2026, people who were born on July 31st, 1139 will be 324,000 days old!

... in seconds, minutes and hours

What happened on July 31st?

July 31st, 1964

The space probe Ranger 7 captured thousands of close-up photographs of the Moon over its final minutes of flight and transmitted them to Earth before crashing on the lunar surface.

July 31st, 1874

Patrick Francis Healy was inaugurated as president of Georgetown University, becoming the first African-American president of a predominantly white university in the United States.

July 31st, 2014

Gas explosions in Kaohsiung, Taiwan, killed 32 people and injured 321 others.

July 31st, 2012

The largest power outage in history occurred across 22 Indian states, affecting more than 620 million people, or about 9 percent of the world's population.

July 31st, 2007

The Troubles: Operation Banner, the British Armed Forces' operation in Northern Ireland, ended after 38 years with a military stalemate and ceasefire.

July 31st, 2006

Following intestinal surgery, Fidel Castro provisionally transferred the duties of the Cuban presidency to his brother Raúl.

July 31st, 2002

Hamas detonated a bomb at the Mount Scopus campus of the Hebrew University of Jerusalem, killing nine students and injuring about 100 more.

July 31st, 2000

Three years after being hit by a mudslide, the Ten Thousand Buddhas Monastery (pagoda pictured) in Hong Kong fully reopened.

July 31st, 1991

Soviet Special Purpose Police Unit troops killed seven Lithuanian customs officials in Medininkai in the most serious attack of their campaign against Lithuanian border posts.

July 31st, 1975

The Troubles: In a botched paramilitary attack, three members of the popular Miami Showband and two Ulster Volunteer Force gunmen were killed in County Down, Northern Ireland.

July 31st, 1972

The Troubles: Hours after the British Army's Operation Motorman brought an end to the self-declared autonomous area of Free Derry (Free Derry Corner pictured) in Northern Ireland, three car bombs exploded in the village of Claudy.

July 31st, 1971

Apollo program: The Lunar Roving Vehicle was first used during the Apollo 15 mission to the Moon.

July 31st, 1966

The pleasure cruiser MV Darlwyne disappeared off the coast of Cornwall with the loss of all 31 people aboard.

July 31st, 1954

A team of Italian climbers became the first to reach the summit of K2, the world's second-highest mountain.

July 31st, 1941

The Holocaust: Under instructions from Adolf Hitler, Hermann Göring authorised SS officer Reinhard Heydrich to handle preparations for "the Final Solution of the Jewish question".

Public holidays on July 31st

Fixed holidays (Christian feast day, Ka Hae Hawaiʻi Day , Lā Hae Hawaiʻi Day) which are celebrated on July 31st.

Date as a Roman numeral / digit

Leap year

No: With 365 days 1139 is a normal year and no leap year.

Calendar
July 1139