Hi, Orger friends :-) I sometimes have to convert from a date to a week number, for when I am shift-arrowing a clock table summarizing weeks. It was easy at the beginning of the year, but I see it requires more thought as year advance. I can write little programs to do so, but I wonder if someone has an easy trick in Org mode (or in Emacs)?
If none, maybe that C-!, or something related to dates or calendar display, could show the week number for each week? (random ideas! ...) François