church calendar

1. In the fourth century Christmas was added to the Church calendar as a feast day.
   到了公元四世纪，圣诞节作为一个宗教节日被加到了教堂日历中。
2. Or let's say there's an event at church and we feel an obligation to attend, but there's so much else on our calendar.
   又或许，教会有一个聚会，我们觉得有责任出席，但自己实在有太多事情要办；

noun

1. a calendar of the Christian year indicating the dates of fasts and festivals

   Synonym:    ecclesiastical calendar