January is the first month of the year in the Gregorian calendar, with 31 days. Named after Janus, the Roman god of beginnings and doorways, January marks the start of a new year for most of the world. The countdown resets automatically each year.
January 1st is the first day of the new year in the Gregorian calendar, celebrated worldwide as New Year's Day.
January has 31 days.
Key January dates include New Year's Day (Jan 1), Epiphany / Three Kings Day (Jan 6), and Martin Luther King Jr. Day in the US (third Monday).