Windows 7: time off on windows/linux-dual boot system

Issue:

By default, Windows uses local time, while linux uses UTC.

Solution for Windows7

When RealTimeIsUniversal is enabled, Windows will treat the Real-Time Clock (RTC) from the motherboard as UTC time.

1. Open Regedit, drill down to:
1. HKLM\SYSTEM\CurrentControlSet\Control\TimeZoneInformation
2. Create a new DWORD entry named “RealTimeIsUniversal”. Set the value to 1.
3. Shut down Windows and boot Fedora. 
4. Set the correct time in Fedora, shutdown, and boot back into Windows.

Solution for Fedora

1. go to Date/Time Properties via System > Administration > Date & Time or by opening a terminal and entering: system-config-time
2. Under the Time Zone tab, clear the checkbox next to “System clock uses UTC”.
3. Under the Network Time Protocol tab, select Enable Network Time Protocol.