The extent to which congregations in the Reformed Church in America (RCA) practice the church year varies widely. A few churches observe only Christmas, Easter, and Palm Sunday. More than 80 percent keep Advent, Lent, Maundy Thursday, and Pentecost. About three-quarters observe Good Friday, around 40 percent celebrate Epiphany, Ascension, and Ash Wednesday, and almost a quarter mark Trinity Sunday.
The Reformed Church in America is a semiliturgical church. Its liturgy is a part of its constitution (along with the creeds and the Book of Church Order). New liturgical forms join previously approved ones and together form the total corpus of the liturgy.