Because the liturgical year begins with the First Sunday of Advent, the end of the liturgical year is actually the Saturday after Christ the King.
View page
No, the feast of Pentecost is not the last day of the Liturgical
year. The last Sunday of the Liturgical Year is the feast of Christ
the King. The last day of the Liturgical year would be the
following Saturday.
View page
In Eastern Orthodoxy, the Church Year or Liturgical Year is
referred to as "the Indiction."
View page
The first Sunday of Advent is when the new liturgical year is
begun