Epiphany or Theophany traditionally falls on January 6, is a Christian feast day that celebrates the revelation of God the Son as a human being in Jesus Christ. Western Christians commemorate principally (but not solely) the visitation of the Biblical Magi to the Baby Jesus, and thus Jesus’ physical manifestation to the Gentiles. Eastern Christians commemorate the baptism of Jesus in the Jordan River, seen as his manifestation to the world as the Son of God. Eastern Churches following the Julian Calendar observe the Theophany feast on what for most countries is January 19 because of the 13-day difference today between that calendar and the generally used Gregorian calendar. Since 1970, the date of the celebration by Latin Rite Roman Catholics is fixed as January 6 only in countries where the feast is a Holy Day of Obligation, while in other countries it falls on the Sunday after January 1. In the Church of England also, the feast may be celebrated on the Sunday between January 2 and 8 inclusive.
A separate celebration of the Baptism of the Lord was introduced for Latin Rite Roman Catholics in 1955. Initially, this was to be held on January 13, previously the octave day of the Epiphany, but in the 1969 revision of the General Roman Calendar the date was changed to the first Sunday after January 6. In countries where in a particular year the Epiphany falls on January 7 or 8, the feast of the Baptism of the Lord is celebrated on the following Monday. In the Church of England, the same custom may be followed. In the Episcopal Church in the United States, the feast of the Baptism of the Lord is always the Sunday after January 6.