Russia will turn back its clocks for the last time on Sunday to permanently adopt winter hours. It will also increase its time zones from nine to 11, from the Pacific to the borders of the European Union. For the last three years, Russia experimented with keeping permanent summer time, but it proved to be highly unpopular with many Russians. The Soviet Union introduced Daylight Saving Time in 1981. In 2011, then President Dmitry Medvedev introduced measures to reduce Russia's time zones to nine, and to keep summer time all year round. Russians put their clocks forward one hour but...