16.07.2018 в 11:54:23 -0700 Paul Eggert написал:

+# From Marat Nigametzianov (2018-07-16): +# this is link to order from 1956 about timezone in USSR +# http://astro.uni-altai.ru/~orion/blog/2011/11/novyie-granitsyi-chasovyih-poy... +# From Paul Eggert (2018-07-16): +# Perhaps someone could translate the above-mentioned link and use it +# to correct our data for the ex-Soviet Union. It cites the following: +# «Поясное время и новые границы часовых поясов» / сост. П.Н. Долгов, +# отв. ред. Г.Д. Бурдун - М: Комитет стандартов, мер и измерительных +# приборов при Совете Министров СССР, Междуведомственная комиссия +# единой службы времени, 1956 г. +# This book looks like it would be a helpful resource for the Soviet +# Union through 1956. Although a copy was in the Scientific Library +# of Tomsk State University, I have not been able to track down a copy nearby.

And http://astro.uni-altai.ru/~orion/blog/2015/05/center-reforma-ischisleniya-vr... says that the 1956 decision to change time belts' borders was not implemented as planned in 1956 and the change happened in 1957. There is also the problem that actual time zones were different from the official time belts (and from many time belts' maps) as there were numerous exceptions to application of time belt rules. For example, https://ru.wikipedia.org/wiki/%D0%9C%D0%BE%D1%81%D0%BA%D0%BE%D0%B2%D1%81%D0%... says that by 1962 there were many regions in the 3rd time belt that were on Moscow time, referring to a 1962 map. By 1989 number of such exceptions grew considerably.