The fourth release of the still new-ish qlcal package arrivied at CRAN just now.
qlcal is based on the calendaring subset of QuantLib. It is provided (for the R package) as a set of included files, so the package is self-contained and does not depend on an external QuantLib library (which can be demanding to build). <a href=“https://dirk.eddelbuettel.com/ …