A church service is a term that is often used to refer to the religious devotion that takes place at a Christian church. Christian churches will generally have their church services one to three times a week. Generally speaking, the churches that have more than one church service will do so on the same day. However, some of the larger churches are more inclined to conduct a number of church services on any given number of days. The most routine church service will take place on either Saturday or Sunday.