What time zone settings are you using? Since I'm on the east coast I use the GMT -5:00 Eastern Time setting. I'm guessing yours should be set to either Central or Mountain Time. If your settings are different from the time zone on your computer that could be what's causing the difference.
To check and/or change your time zone settings:
- Go to your "User Control Panel".
- Select "Edit Options".
- Scroll down to "Date & Time Options".
- Select your correct time zone
- Click on "Save Changes".