I have installed Windows 10 and Linux Mint. Linux Mint is set up for my time zone as is Windows. If I boot into Mint, the time is correct, but if I 'restart' in Linux and then select Windows 10 as my OS, the time becomes -12 hours relative to my local time. I have had a similar problem when I had a USB bootable copy of Android to run on my desktop PC and was told that it is just one of those things. Is there a setting in Linux or the Mint distribution that I can tinker with to prevent this annoyance?