Origin: Latin suffix -ary
January has 2 different meanings across 2 categories:
The first month of the Gregorian calendar, following the December of the previous year and preceding February. Abbreviation: Jan or Jan.
"The winter vacation begins in January, marking the start of the new year before the weather warms up in February."
January comes from the Latin word for the month of Janus, named after the two-faced Roman god who was believed to preside over beginnings and endings. The name traveled into English through French and Old English forms before becoming the standard spelling we use today.