January This diversity calendar starts with month-long celebrations in January: Poverty in America Awareness Month Slavery and Human Trafficking Awareness Month January 1: New Year's Day, the first day of the year as celebrated by many countries. January 6: The Feast of the Epiphany, also known as Three Kings Day or Día de los Reyes, a Christian holiday that recognizes the visit of the three wise men to the baby Jesus after his birth. January 7: Christmas Day, as celebrated by Eastern Orthodox Christians, as they follow the Julian calendar instead of the Gregorian calendar. January 8: Bodhi Day, the Buddhist holiday that commemorates the day that Siddhartha Gautama experienced enlightenment. January 14: Orthodox New Year, according to the Julian calendar. January 17: World Religion Day, a Bahá'í holiday that celebrates the commonality between different religions and encourages interfaith understanding. January 17: Martin Luther King Jr. Day, a holiday that marks the birthday of civil rights leader Martin Luther King, Jr. January 27-28: Tu B'shevat, or the Jewish New Year for Trees, known as the Jewish Arbor Day, which marks the start of spring in Israel. January 28: Mahayana New Year, the day that Mahayana Buddhists celebrate the new year.