January 20 is:
National Buttercrunch Day
Martin Luther King, Jr. Day, a public holiday. It is a day off for the general population, and schools and most businesses are closed.
Penguin Awareness Day
1265 – In Westminster, the first English parliament conducted its first meeting held by Simon de Montfort in the Palace of Westminster, now also known colloquially as the “Houses of Parliament“.
1503 – Casa Contratacion (Board of Trade) founded in Spain to deal with American affairs. It was founded by Queen Isabella I of Castile.
First American military court martial trial began in Cambridge, Mass in 1778. Ordered by George Washington against William Seeds and Samuel Carter for desertion from the Continental Army.
The Kingdom of Great Britain signed a peace treaty with France and Spain in 1783, officially ending hostilities in the American Revolutionary War (also known as the American War of Independence).
John Marshall was appointed Chief Justice of the United States in 1801.
LaMarcus Adna Thompson patented the roller coaster in 1885 for the Switchback Railway that opened a year earlier at Coney Island. There are now over 6500 roller coasters all over the world.
1887 – The United States Senate allowed the Navy to lease Pearl Harbor, in Honolulu,Hawaii as a naval base.
The American Civil Liberties Union was founded by Roger Baldwin, Crystal Eastman, Helen Keller, and Walter Nelles on January 20, 1920. Its stated mission was “to defend and preserve the individual rights and liberties guaranteed to every person in this country by the Constitution and laws of the United States.”
Edward VIII (Edward Albert Christian George Andrew Patrick David) became King of the United Kingdom in 1936. He was the eldest son of King George V and Queen Mary. He abdicated in December the same year. He was succeeded by his younger brother Albert, (Albert Frederick Arthur George) who chose the regnal name of George VI.
Twenty minutes after Ronald Reagan was inaugurated on January 20, 1981. Iran released 52 American hostages after holding them hostage for 444 days. The hostages were placed on a plane in Tehran as Reagan delivered his inaugural address.
Publication of
1862 John Tyler, the tenth president of the United States, died in Richmond, Va., at age 71. Tyler was the first Vice-President to ascend to the Presidency upon the death of the President, William Henry Harrison. He fathered more children than any other president – eight with his first wife and seven with his second wife. When Civil War broke out, Tyler sided with the Confederacy and his death was not officially recognized in Washington, D.C. His coffin was draped with the Confederate Flag.
Winnie the Pooh Day -The Birthday of Winnie’s author A.A. Milne (1882)
Birthday of Oliver Hardy (January 18, 1892), American comic movie actor, one-half of the famed Laurel & Hardy team. He was born Norvell Hardy and added his father’s name “Oliver” to his own prior to 1910.
Birthday of Cary Grant, (January 18, 1904), actor, born Archibald Leach in Bristol, England.
Birthday of Danny Kaye (born David Daniel Kaminsky) (January 18, 1913), American actor/comedian/dancer whose performances featured physical comedy, idiosyncratic pantomimes and rapid-fire nonsense songs. See
Birthday of Benjamin Franklin (January 17, 1706), Founding Father of America. He was a leading printer, statesman, inventor and diplomat. Author of “Poor Richard’s Almanac“. Inventor of the lightning rod, bifocals, the Franklin stove, and a carriage odometer.
1893 
1929 – Popeye the Sailor Man, a cartoon character created by Elzie Segar, first appeared in the Thimble Theatre comic strip.
Birthday of Michelle Obama (January 17, 1964), wife of Barack Obama; First Lady 2009-Jan 20, 2017.
Actress Carole Lombard, age 33, died in a plane crash near Las Vegas in 1942. She had been married to Clark Gable.
Gen. Dwight D. Eisenhower took command of the Allied invasion force in London in 1944.
On Jan. 15, 1929, Dr. Martin Luther King Jr., the Baptist minister who led the American Civil Rights Movement in the 1950’s and ’60’s with his doctrine of nonviolent resistance, was born.
1943 – The Pentagon, the headquarters of the United States Department of Defense, was dedicated in Arlington, Virginia.
Birthday of Benedict Arnold (January 14, 1741), American patriot/traitor.
Elizabeth I was crowned Queen of England in Westminster Abbey. She was the last Tudor monarch, daughter of Henry VIII and Anne Boleyn. Sometimes called “The Virgin Queen”. Succeeded to the throne on the death of her sister, Queen Mary. She reigned until her death in 1603. The colony of Virginia was named for her.
On this day in 1794, President George Washington approved a measure adding two stars and two stripes to the American flag, following the admission of Vermont and Kentucky to the union. This flag was the only U.S. Flag to have more than 13 stripes

All in the Family, the famous situation comedy premiered on CBS in 1971. Carroll O’Connor as Archie Bunker; Jean Stapleton as Edith Bunker, his wife; Sally Struthers as Gloria Stivic, their daughter; and Rob Reiner as Michael “Meathead” Stivic, Gloria’s husband. The show ran for nine seasons, ending April 8, 1979. The show broke ground in its depiction of issues previously considered unsuitable for a U.S. network television comedy, such as racism, antisemitism, infidelity, homosexuality, women’s liberation, rape, religion, miscarriages, abortion, breast cancer, the Vietnam War, menopause, and impotence.
Birthday of Alexander Hamilton (January 11, 1755), a founding father of the United States, chief staff aide to General George Washington, one of the most influential interpreters and promoters of the U.S. Constitution, the founder of the nation’s financial system, and the founder of the first political party, first U.S. Secretary of the Treasury, co-author of “The Federalist Papers”.
Grand Canyon National Monument was created in 1908.