How do you change the system clock of a device? A. Change the system clock with the date and time format HH:MM:SS YYYY-MM-DD. B. Change the UTC and the system time zone. C. Run the clock datetime utc command. D. Run the clock datetime command.

The steps to change the system clock of a device can vary depending on the operating system. Here are general steps that can be applied to most systems:

1. Open your device's settings: This is usually represented by a gear icon on your home screen or in your app drawer.

2. Look for the "Date & Time" settings: This is usually under the "System" or "General" category.

3. Change the system clock: Here you can manually set the date and time to whatever you want. If you want to change the time to a specific format (HH:MM:SS YYYY-MM-DD), you would enter the time and date in that format.

4. Change the UTC and system time zone: If you're in a different time zone, you'll also need to change this setting. This is usually done by selecting your city or region from a list.

5. Run the clock datetime utc command: This step is more specific to systems that use command line interfaces, like Linux or Unix. Open your command line tool and type "clock datetime utc" followed by the date and time in the format specified.

6. Run the clock datetime command: Similarly, this is for command line interfaces. Type "clock datetime" followed by the date and time.

Remember to save or apply your changes before closing out of your settings. Your system clock should now be set to your desired date and time.