MyBirthday.Ninja

Tip: Click the free calendar ninja poster above to save the high quality version. Everyday a new design will be generated for you. Collect all 16 ninja poses.

The next time you can reuse this calendar will be on year 2026. Both calendars will be exactly the same! This is assuming you are not interested in the dates for Easter and other irregular holidays that are based on a solar cycle.

April 4 (4/4), June 6 (6/6), August 8 (8/8), October 10 (10/10), December 12 (12/12), and the last day of February always fall on the same day of the week in any given year. This is called the ‘Doomsday rule’. Check these dates using the full 12-month calendar below to verify.

1981 Calendar

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•  February 5, 1981 – New Year’s Day in Chinese calendar. Start of the year of the Metal Rooster in Chinese astrology.
•  April 27, 1981 – Xerox PARC introduces the computer mouse.
•  June 25, 1981 – Microsoft is restructured to become an incorporated business in its home state of Washington.
•  July 17, 1981 – A structural failure leads to the collapse of a walkway at the Hyatt Regency in Kansas City, Missouri killing 114 people and injuring more than 200.
•  July 19, 1981 – In a private meeting with U.S. President Ronald Reagan, French Prime Minister François Mitterrand reveals the existence of the Farewell Dossier, a collection of documents showing that the Soviets had been stealing American technological research and development.
•  August 19, 1981 – Gulf of Sidra Incident: United States fighters intercept and shoot down two Libyan Sukhoi Su-22 fighter jets over the Gulf of Sidra.
•  September 21, 1981 – Sandra Day O'Connor is unanimously approved by the U.S. Senate as the first female Supreme Court justice.
•  November 23, 1981 – Iran–Contra affair: Ronald Reagan signs the top secret National Security Decision Directive 17 (NSDD-17), giving the Central Intelligence Agency the authority to recruit and support Contra rebels in Nicaragua.
•  November 28, 1981 – Our Lady of Kibeho: Schoolchildren in Kibeho, Rwanda, experience the first of a series of Marian apparitions.
•  December 19, 1981 – Sixteen lives are lost when the Penlee lifeboat goes to the aid of the stricken coaster Union Star in heavy seas.

•  January 30, 1981 – Jonathan Bender, American basketball player
•  February 26, 1981 – Kertus Davis, American race car driver
•  March 27, 1981 – Carey Davis, American football player
•  April 4, 1981 – Eduardo Luís Carloto, Brazilian footballer
•  April 16, 1981 – Anestis Agritis, Greek footballer
•  June 10, 1981 – Albie Morkel, South African cricketer
•  June 29, 1981 – Nino, Greek singer-songwriter and guitarist
•  August 5, 1981 – Jesse Williams, American actor
•  November 2, 1981 – Rafael Márquez Lugo, Mexican footballer
•  December 31, 1981 – Jason Campbell, American football player