Did you install a dual boot system which has one from Apple together with one from Microsoft?
And you find that the time is not properly synchronized between the two systems?
I think the more efficient way is to perform the solution on the Windows regedit. It's very simple.
( Changing the time zone in OS X does not turn out to be a permanent solution)
1) Boot into Windows
2a) If you are on XP, click Start, Run, then type regedit.exe
2b) If you are on Vista / Seven / Eight, click Start, then type regedit.exe in the search bar
3) Go and find this key: HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet001 \ Control \TimeZoneInformation
4) Now right-click the mouse anywhere on the white space in the right area and create a new DWORD (32-bit)
5) Well, now you should name the new DWORD RealTimeIsUniversal
6) Double click on the new DWORD whose name is RealTimeIsUniversal and change the value of the DWORD from 0 to 1
7) Restart and boot into OS X. Set the correct time then boot back into Windows. Now, you have set the time of both systems correctly
8) End *** If you want to make the modification directly from OSX, install this pkg (by apple square). **** PKG not tested by me.
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