The following table in Emacs' org-mode automatically calculated the number of days between timestamps in columns 1 and 2 and put the results in column 3.
| <2015-07-24 Fri> | <2015-07-22 Wed> | 2 |
#+TBLFM: $3=$1-$2
I was wondering if there is a way to calculate the number of working days in the range given by columns 1 and 2, i.e. excluding weekends.