windows Bios does not support UTC hardware time. Therefore, the Bios hardware time for a windows server is always set to local time. However, linux treats that time as UTC by default. Thus for a linux virtual machine running in hyper-v it will treat the localtime as UTC cause incorrect time.
Here is what you should do:
set in /etc/default/rcS UTC=no
Then use tzselect to select correct time zone.
