How to change Ubuntu timezone to UTC

Problem:

How can I change my timezone to UTC in Ubuntu?

Solution:

1. In a terminal window type:

   sudo dpkg-reconfigure tzdata
   

2. Then select "None of the above":
   
3. After that, select "UTC":
   

If all goes well then the "date" command should show the date and time in UTC.

References:

• https://wiki.debian.org/TimeZoneChanges
• https://www.computerhope.com/unix/udate.htm