> The cases are specified through 2038 (the maximum year associated with a signed, 32-bit time_t value).
> After that (through year "max") the rules say that DST ends the third Sunday of February every year; this is wrong by a week in some cases but is better than nothing.

Just a note.. personally I don't think a knowingly wrong rule is
"better than nothing", it forces the sysadmin to fix the clock 2
times. I think when there's no good rule "forever", make it apply only
for the known cases and leave it alone so the admin can easily handle
it on his own if needed. Not gonna happen anytime soon in this case,
but happened almost every year in Brazil before this new rule.

I second that.

Rodrigo Severo