Sync Windows PC's time with the Microsoft server is synchronizing it manually from the Windows Settings menu.  Follow the steps below to get it done:

Step 1: Tap the Windows key + i button simultaneously on the keyboard to launch the Windows Settings menu.

Step 2: Select 'Time & Language' as highlighted below:

Step 3: In the 'Date & Time' section, navigate to scroll down to the 'Synchronize your clock' sub-section and tap the 'Sync now' button. This will immediately sync your computer's clock with the Microsoft time server (usually takes 2 - 5 seconds).

STEP 1: Choose Apple menu > System Preferences System Settings.

STEP 2: Click Date & Time.

STEP 3: In the Date & Time pane, make sure that ”Set date and time automatically” is selected and your Mac is connected to the internet. Your Mac can then get the current date and time from the network selected in the adjacent menu.

Operating Systems these days are set to fetch Date & Time and Time zones automatically through the internet. You can set your system to fetch date and time according to the selected time zone as follows:

STEP 1: Click the downward arrow located at the top right corner of your Ubuntu desktop and then click the settings icon located at the bottom left corner

OR

Type Settings in the Ubuntu Dash as follows:

STEP 2: Click the Details tab and then select the Date & Time option. Make sure your Automatic Date & Time button is turned on. This will enable you to automatically fetch the current date and time from the internet server.