Epiphany, celebrated on January 6, marks the end of the Christmas season (commonly referred to as the 12 days of Christmas).
It’s a time in the liturgical year when we remember the magi’s journey and Jesus being revealed as the Savior of the world. In fact, the word “Epiphany” comes from the Greek epiphaneia, meaning “manifestation” or "striking appearance.” (source)
In some churches, Epiphany is considered the start of a new season that runs through the Tuesday before Ash Wednesday and the beginning of Lent. In other churches, Epiphany is celebrated as a single day, and the period that follows is considered Ordinary Time. (source)