History of 2021-11-20 Tricks with GNU date

2021-11-20
09:14 UTC Revision 1 . . . . mborkDate- and time-related computations are hard – we all know this. Sometimes the problem is that there are many edge cases, sometimes the issue is conceptually hard, and sometimes both. Recently, I had an instance of a problem which was conceptually hard (at least for my little brain).