Every year, we buy the United Methodist Program Calendar for the church office. It gives our worship leaders the information they need to plan Sunday services for each church season: Advent and Christmas, Lent and Easter. It gives our altar helpers the information they need to have the correct paraments on the altar, white for holy days or blue, green, or red for the liturgical seasons. And it gives suggestions for Bible passages that might be used for sermons in each season, since a passage that is appropriate in Epiphany may not be a good fit for Pentecost.