Re: [tz] time and cost to reprogram computers for DST in Japan

* Tom Lane:

I rather imagine the professor has a point. Yeah, code that uses tzdb would be easy to update. But Japan is likely chock-full of locally grown code that has never had to cope with any situation other than "JST = UTC+9", and probably hasn't got any generality whatsoever about its timestamp handling.

At last some of this code has to be touched for the new era name anyway, and *that* work is supposed to complete within a few months. (The last era transition was in 1989.)