List below are the steps to change date, time and time zone on Windows 10 operating system.
Step 1: Click Windows icon or Start button.
Step 2: Select Settings from the listed menus
Step 3: In the Settings screen, select Time & language option.
Step 4: In the Settings screen, select Date & Time option to make changes to your Date, Time or Time zone.
You can manually change the time by turning off the Set time automatically option.
And to change time zone, use the Time zone drop down to select your preferred value.