Correct wrong system time in Windows 8
If you don’t synchronize your system clock with a time server, your clock will most likely miss the real time for one or two hours, even if you set your time zone and everything correctly. You can correct this easily by right-clicking the clock at the bottom right corner and selecting Adjust date/time. In the appearing window, go to the Internet Time tab and click on Change settings….
Tick Synchronize with an Internet time server and select time.windows.com from the drop-down menu; click Update now. The time should now be displayed correctly.