[tz] permanent DST and North American time zone names

[Paul Eggert]

On 3/15/22 23:26, Ephraim Silverberg via tz wrote:
> Another option would be to just delete the middle letter and use two-letter
> abbreviations -- e.g.  EST/EDT -> ET

As I understand it, POSIX and Internet RFC 8536 both require at least 
three characters in time zone abbreviations. Of course the standards 
could be changed, but the corresponding software would need to be 
changed too.