This page will generate a javascript widget containing a live multi-timezone time and date
which you can embed in a webpage.
The widget is self-contained and doesn't load any external content. It's also really lightweight
(2.4KB uncompressed with 5 timezones and no theme). The widget includes time transitions data (like applying daylight saving)
for the next five years, after that the time may be wrong.
Size of the widget code: 2.45 KB