What I do with my clients is at the beginning of each year I provide them with a copy of the coming years calendar. (just a one page print out from my computer - not a full sized kitchen calendar) On it, I highlight the Stat holidays that I will be taking - it reminds them that I am closed and paid on those days. =) It also allows them to plan for the other days that I am will be closed on. (i.e. dental appointments)