On Mon, May 03, 2010 at 15:09:36 -0500, Aaron Konstam <akonstam at sbcglobal.net> wrote: > > Every time you shutdown Linux the Linux system time is dumped as the new > BIOS time. So the BIOS time can be set by setting the system time. I am > not sure how Windows handles this but I would bet local time is used. Take a look at: http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html