The site will generate a code block containing a script link like worldtimebuddy.com/clock_widget.js .
World Time Buddy does not offer a standalone .html file for download. Instead, it provides dynamic embed codes for two main types of widgets: Download World Time Buddy (WTB) html
If you need World Time Buddy as a local tool rather than a website element, you can install it on various devices: The site will generate a code block containing