I'd say that's a Windows issue and Linux has a solution to make it compatible with Windows. Why would you want the system clock to be in local time instead of UTC? For example you switch off your laptop in one timezone, fly to another timezone, switch it back on, the time has been ticking the same whether you moved to a different timezone or not, you only need to change the timezone for display, why would you need to save back to RTC a different value based on the timezone? I never tested it but I'd like to see what happens on a Windows desktop if you change the timezone and unplug the computer without giving a chance to save to RTC. On next boot the local time read from RTC will be wrong.