New Year's Day is the first day of the new year. On the modern Gregorian calendar, it is celebrated on January 1, as it was also in ancient Rome (though other dates were also used in Rome). In all countries using the Gregorian calendar as their main calendar, except for Israel, it is a public holiday, often celebrated with fireworks at the stroke of midnight as the new year starts. January 1 on the Julian calendar corresponds to January 14 on the Gregorian calendar, and it is on that date that followers of some of the Eastern Orthodox churches celebrate the New Year.
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Martin Luther King, Jr. Day is a United States holiday marking the birthdate of Rev. Dr. Martin Luther King, Jr., observed on the third Monday of January each year, around the time of King's birthday, January 15. It is one of three United States federal holidays to commemorate an individual person.
King was the chief spokesman for nonviolent activism in the civil rights movement, which successfully protested racial discrimination in federal and state law. He was assassinated in 1968.