I'm on a volunteer project and want to use program/app that will give me fixed dates over a given period. For instance, a given start date and dates for each 21 day period thereafter, or what are the dates of the second tuesday each month over a given period.
I'm quite prepared to do my own DIY learning etc, but would appreciate a heads up in the right direction rather than stumbling down too many blind alleys in an effort to find, I hope, a simple program/app that would do this task.
Tia Michael