> is like using 2 digits to identify a year
Well not exactly, because at the time 2 digits were used there was an existing standard of 4 digits that simply wasn't implemented. As it stands now, there isn't a cross-browser standard that's implemented correctly. But I'd hope that one will work within the next 3 years, and that at some point people will revisit their implementations of this functionality to update them for cross-platform accessibility.
I do agree that a working example would have been useful. I'll try to do that in the future. Thanks.