- Annual : date.hpp
- Bimonthly : date.hpp
- EveryFourthMonth : date.hpp
- Following : calendar.hpp
- ModifiedFollowing : calendar.hpp
- ModifiedPreceding : calendar.hpp
- MonthEndReference : calendar.hpp
- Monthly : date.hpp
- NoFrequency : date.hpp
- Once : date.hpp
- Preceding : calendar.hpp
- Quarterly : date.hpp
- Semiannual : date.hpp
- Unadjusted : calendar.hpp