tzdb currently has the switch in Simferopol from
     2014-03-30T02:00 to 04:00, following the announcement in
     [https://vz.ru/news/2014/3/17/677464.html] from 2014-03-17.

     But the clocks of the main station shown in the video at
     [https://www.rt.com/news/crimea-clocks-moscow-time-173/]
     advance from 22:00 to 00:00. If this is not a fake, the
     switch happened 4 hours earlier.

     Michael Deckers.