The term "Christian year" refers to a way of organizing the calendar based on important events and seasons in the Christian faith. It includes special days and times that celebrate significant events in the life of Jesus Christ and the teachings of Christianity.
You can use "Christian year" when talking about the different seasons and celebrations in the Christian calendar, such as Advent, Christmas, Lent, Easter, and Pentecost.
In discussions about church traditions or liturgical practices, you might say: - "The Christian year helps believers to reflect on the life of Christ through its various seasons."