On the next Sunday, October 30, at 3 o’clock Russia would have adjusted clocks one hour backward and returned to winter time from summer time or Daylight Saving Time. But it will do it no more. According to the Law of Time Calculus, Moscow time zone is always UTC+4 instead of the usual UTC+3, with an added hour for summer time.
The corresponding updates have already been applied to Windows 7 and Windows Vista:
The message in Windows 7 says: There are no upcoming Daylight Saving Time changes.
In spring, it showed when clocks were adjusted for summer time and back. And the pop-up calendar on the Taskbar started to show the message about upcoming DST changes in two week’s time.
There’s no Automatically adjust clock for Daylight Saving Time check box in the Time Zone Settings:
Windows Vista is more straightforward: Daylight Saving Time is not observed by this time zone:
Is your operating system ready for the cancelled DST in Russia?