Synchronise two directories, e.g. Nextcloud and an encrypted USB drive with archive, recursive, partial, and progress flags:
rsync -varP src destinationExcel – is it a working day?
Need to know if a date is a working day? Excel has a WORKDAY function which takes a date, adds to it, and tells you the next working day. What about if a specific day is a working day? Assuming the date is in A1:
=WORKDAY((A1-1),1)