The basic element to the calendar is Sunday, which is a festival of Jesus’ resurrection. However, Christian Churches have historically observed other festivals which commemorate events in the life of Jesus or of significant individuals in the history of the Church. The purpose of the liturgical calendar is to guide commemorations as a part of the daily worship of the Lutheran Church. There is some variation associated with the observance of the calendar, as each Lutheran Church creates its own calendar and each congregation must choose independently how many individuals will be commemorated within a given year and how many festivals and lesser festivals they will publicly celebrate, especially if they do not coincide with a Sunday.