I have to look up the difference for every time zone not adjacent to my own now, I don’t expect I’d remember France’s preferred hours any more than I remember the time difference.
I agree that date formats other than ISO8601 ones are bad too but time zones, particularly combined with DST, wider time zones than standard and DST going the other way on the southern hemisphere are much, much more complicated than trying to figure out date formats.
After about 2 days you won’t need a chart to know the time offset does to someone’s waking hours. Unless of course you have a learning disability.
I have to look up the difference for every time zone not adjacent to my own now, I don’t expect I’d remember France’s preferred hours any more than I remember the time difference.
And right now you can go look at a map of time zones. Time zones are no where near the issue that date formats are
I agree that date formats other than ISO8601 ones are bad too but time zones, particularly combined with DST, wider time zones than standard and DST going the other way on the southern hemisphere are much, much more complicated than trying to figure out date formats.