Clocks go back 1 hour when Daylight Saving Time (DST) ends in the majority of European cities Sunday, October 28, 2012 at 1am (01:00) UTC.
US & Canada turn their clocks back Sunday, Nov 4, 2012.
Most countries in Europe synchronize their daylight saving time, which starts from the last Sunday of March until the last Sunday of October.
below are links to some of the cities which will end DST in the early hours of Sunday, Oct 28, 2012:
NOTE:The UK will revert back to GMT from BST
Uncertain in Russia
In 2011, then-president Dmitry Medvedev decided to abolish winter time and stay on Daylight Saving Time, also known as "Summer Time", all year round.
However, only a year later, in late September 2012, a proposal for Russia to set the clocks back to standard time permanently was introduced and backed by current president Vladmir Putin. Whether and when this DST change will occur has not yet been made public. It could mean that Russia will follow the rest of Europe and set the clocks back on Sunday, October 28, 2012, but another possibility is that they may wait until spring 2013. timeanddate.com is following this closely and will post updates and amend the DST information for Russia as soon as a public announcement is made.