This is interesting, and I guess for portability not having a calendar table makes sense, but imo a calendar table and a numbers table are great additions and m

This is interesting, and I guess for portability not having a calendar table makes sense, but imo a calendar table and a numbers table are great additions and making yours arbitrarily complex for your use case makes a lot of this type of stuff (if you are not implementing an entire calendar solution itself) a lot easier.