Calendric is used to describe something related to a calendar. There are many synonyms that can be used instead of calendric such as annual, cyclical, periodic, or temporal. These words refer to anything that occurs on a regular basis, usually on a yearly or seasonal cycle. Other possible synonyms could be calendar-based, time-based, or dated. When describing events that happen on a specific day or month, you can use words like commemorative, traditional, or festive. Overall, there are many synonyms that can be used instead of calendric, each one giving slightly different nuances to the meaning of the word.