Disabling time synchronization with Hyper-V

Open the 'Hyper-V Manager' application on the host machine.

On the list of 'Virtual Machines', right-click on the VM where you want to change the Date/Time settings and click 'Settings'.

Under the 'Management' section of options, select 'Integration Services', and uncheck the 'Time synchronization' option.

When changing the Date/Time settings from within the VM, the Date/Time will no longer revert to the Date/Time on your host machine.