On 15 February 2017 at 13:57, Deborah Goldsmith <goldsmit@apple.com> wrote:
Also, now that the affected zones no longer observe DST, shouldn’t their numerical abbreviations change? E.g., shouldn’t this:

                        8:00    Mongol  +08/+09

be this (for Ulaanbaatar)?

                        8:00    Mongol  +08

No.  There still exist past rules named "Mongol" that observed DST, and those should show +09.  (Eventually this will all be replaced with %z).

--
Tim Parenti