> On 2021-06-26, at 9:59 AM, David T. Lewis <lewis at mail.msen.com> wrote:
> 
> Here is another variation that seems to work with leap years:

I like that. And the comment about different cultures having different definitions is yet another reminder that pretty much anything to do with people is difficult; names (don't even think of assuming that the first separator char defines the end of a christian name. So many cultural assumptions in one parsing rule!), addresses (what do you mean addresses must have street number and zipcode?), data & time (Time is an illusion, lunchtime, doubly so. And which timezone is that lunch in?)

tim
--
tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
Fractured Idiom:- CA VA SANS DIRT - And that's not gossip