[blahgeek]

I think the problem is that we already have the networks and protocols to synchronize time (NTP, PTP, etc.), but not for timezone DB data.

[mlichvar]

RFC 7808 specifies a TZDIST service.

But most operating systems already have their own mechanism to update their timezone database. This is not a problem. Shifting timezones by 15 minutes every few thousand years would work with current software.

All we need to do is to agree that UTC will have no more leap seconds.