Hi all, Version 0.1 of the new user-contributed package named "calendar_utils" has just been uploaded to the gretl server. This package currently includes three convenience functions for working with calendar dates. Check out the help file, sample script and/or the following homepage showing a small example on how to use things: https://github.com/atecon/calendar_utils/blob/main/README.md The source code as well as tests can be found here: https://github.com/atecon/calendar_utils/ Comments and improvements are welcome. Best, Artur