When was 3 kings day started?

Three Kings Day, also known as Epiphany, has its roots in early Christian traditions, commemorating the visit of the Magi to the infant Jesus. It is celebrated on January 6th, with origins tracing back to the 4th century when the church established the feast. The specific customs and celebrations associated with Three Kings Day vary by culture, but the day has been observed for centuries in various Christian communities around the world.