1. Go to Start > Control Panel > Administrative Templates
2. Open Local Security Policy
Or
windows key + R
secpol.msc

3. Go to Local Policy > User Rights Assignments > Change the System time , double click to open it.

4. In the below window, you will see the options to add and remove user groups. Remove the limited users from this list and those limited users will not be able to edit date and time of this computer.