Today is the 276th day of 2023 and the 11th day of autumn. TODAY’S HISTORY: In 1863, President Abraham Lincoln designated the last Thursday in November as a national day of thanksgiving. In 1952, the United Kingdom conducted a successful test of an atomic bomb off the coast of Australia, becoming the world’s third nuclear power. In 1990, East and West Germany were reunified. In 1995, O.J…