Andre Robatino <robatino <at> fedoraproject.org> writes:
it looks like OS/2 is capable of keeping its RTC in TAI (which AIUI
is
basically the same as UTC except that TAI doesn't have leap seconds, so TAI
is "real time", and UTC is TAI interspersed with leap seconds, so both
increase monotonically, but UTC has "jumps").
Actually, I have that backwards, after a little reading it appears that UTC
basically pauses during each leap second (but doesn't go backwards). TAI is
currently 35 seconds ahead of UTC and that increases by one each time
there's a leap second.