How do I set my clock in Windows to UTC / localtime?

Solution 1:

On my Windows 7 machine, the default is for HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation\RealTimeIsUniversal to not exist. So, here are Windows instructions:

Hold down the Windows logo key and press R. There, type regedit. Click OK and if you're using Vista or newer, acknowledge the UAC warning.

Now, in the left pane, there is a tree view. Under Computer, there will be some things called HKEY_SOMETHING_OR_OTHER. You should click the + next to HKEY_LOCAL_MACHINE. Then, you should click the + next to SYSTEM to get ino HKEY_LOCAL_MACHINE\SYSTEM. Now, expand CurrentControlSet, then inside it, Control, and then TimeZoneInformation. Now, right-click the entry for RealTimeIsUniversal and select the option to delete it. Alternatively, you could set it's value to 0.