Today is Thursday, April 26, the 117th day of 2012. There are 249 days left in the year.

1478 ― Pazzi conspirators attack Lorenzo and kill Giuliano de'Medici

1478 ― Easter is celebrated for the first time

1514 ― Copernicus makes his first observations of Saturn

1564 ― William Shakespeare baptized

1721 ― Smallpox vaccination first administrated

1913 ― Sun Yet San calls for revolt against President Yuan Shikai in China

1942 ― Colliery explosion kills 1,549 at Honkeiko, Manchuria

1981 ― Largest U.S. bank robbery (Tucson, Az.), more than $33 million stolen

1982 ― Argentina surrenders to Britain on South Georgia near Falkland Island

1986 ― Actor/body builder Arnold Schwarzenegger weds newscaster Maria Shriver