April 13th, 1237

Born on April 13th, 1237

Age in days, weeks and months
Wow, over 288,000 days old!

Why not celebrate an alternative birthday? In 772 days, exactly on July 15th, 2028, people who were born on April 13th, 1237 will be 289,000 days old!

... in seconds, minutes and hours

What happened on April 13th?

April 13th, 2017

War in Afghanistan: In an airstrike in Nangarhar Province, the U.S. military dropped the most powerful conventional bomb used in combat.

April 13th, 2009

Andrew Hussie's webcomic Homestuck debuted, and later concluded on the same day in 2016.

April 13th, 1997

In golf, 21-year-old Tiger Woods became the youngest player to win the Masters Tournament, breaking the record for the lowest four-round score.

April 13th, 1973

Catch a Fire, the landmark reggae album by Bob Marley and the Wailers, was released.

April 13th, 1958

In the midst of the Cold War, American pianist Van Cliburn won the inaugural International Tchaikovsky Competition in Moscow.

April 13th, 1956

The Vietnamese National Army captured Ba Cụt, a military commander of the religious sect Hòa Hảo, which ran a de facto state in South Vietnam in opposition to Prime Minister Ngô Đình Diệm.

April 13th, 1953

The CIA began Project MKUltra, an illegal, covert human research program into mind control.

April 13th, 1946

Nakam, a Jewish organization seeking revenge for the Holocaust, attempted to poison thousands of SS prisoners at Langwasser internment camp, but did not kill anyone.

April 13th, 1943

World War II: German news announced the discovery of a mass grave of Polish prisoners of war killed by Soviet forces in Katyn, Russia, causing a diplomatic rift between the Polish government-in-exile and the Soviet Union.

April 13th, 1942

Austrian soldier Anton Schmid was executed for rescuing Jews from the Ponary massacre in Vilnius.

April 13th, 1849

During a closed session of the Diet of Hungary, Lajos Kossuth presented the Hungarian Declaration of Independence from the Habsburg monarchy.

April 13th, 1829

The Roman Catholic Relief Act received royal assent, removing the most substantial restrictions on Catholics in the United Kingdom.

April 13th, 1777

American Revolutionary War: British and Hessian forces conducted a surprise attack against a Continental Army outpost at Bound Brook, New Jersey.

April 13th, 2011

The board of Rosendale, New York, voted 3–2 to approve the purchase of Joppenbergh Mountain.

April 13th, 1996

An Israel Defense Forces helicopter fired rockets at an ambulance, killing two women and four children in Mansouri, Lebanon.

Public holidays on April 13th

Fixed holidays (Christian feast day, Songkran) which are celebrated on April 13th.

Date as a Roman numeral / digit

Leap year

No: With 365 days 1237 is a normal year and no leap year.

Calendar
April 1237