I suppose there was no actual clock change. The resolution #725 is not
about changing clocks, it contains no such instructions whatsoever.

According to http://en.wikipedia.org/wiki/Time_in_Russia:

   As a result [of decree #725] some districts of the Sakha Republic switched from Vladivostok Time to Yakutsk Time (Zone 7):
        Tomponsky District
        Ust-Maysky District
    Some districts switched from Magadan Time to Vladivostok Time:
        Oymyakonsky District (Sakha Republic)
        Kurilsky District and Yuzhno-Kurilsky District (Sakhalin Oblast)

These switches are what would require clock changes; the question is, when did they change?

        --ado