March 21st is the 80th day of the year (81st in leap years) in the Gregorian calendar. There are 285 days remaining until the end of the year. This date is slightly more likely to fall on a Monday, Wednesday or Saturday (58 in 400 years each) than on Thursday or Friday (57), and slightly less likely to occur on a Tuesday or Sunday (56).
In astrology, the day of the equinox is the first full day of the sign of Aries. It is also the traditional first day of the astrological year. In the 21st century, the equinox usually occurs on March 19 or 20, being on March 21 only in 2003 and 2007. The next year in which the equinox occurs on March 21 is 2102.
1556 – In Oxford, Archbishop of Canterbury Thomas Cranmer is burned at the stake.
1871 – Otto von Bismarck is appointed as the first Chancellor of the German Empire.
1943 – Wehrmacht officer Rudolf von Gersdorff plots to assassinate Adolf Hitler by using a suicide bomb, but the plan falls through; von Gersdorff is able to defuse the bomb in time and avoid suspicion.
1965 – Dr. Martin Luther King, Jr. leads 3,200 people on the start of the third and finally successful civil rights march from Selma to Montgomery, Alabama.
2006 – The social media site Twitter is founded.
Darkest Hour Star Gary Oldman turns 60
Pacific Rim Uprising Actor Scott Eastwood turns 32
Comedian Rosie O’Donnell turns 56
Ferris Bueller’s Day Off Actor Matthew Broderick turns 56
James Bond Actor Timothy Dalton turns 72