Use KDE's Digital Clock Widget as a World Clock

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Here is a simple trick for those KDE users who need to keep tabs on time in different cities around the world. Instead of using a dedicated world clock applet or browser extension, you can configure the digital clock widget in the main panel to display time in different time zones.
To do this, right-click on the digital clock widget and choose Digital Clock Settings. Switch to the Time Zones section, and type the name of the desired city in the search field. Tick then the check box next to the city. Repeat this for other cities, and press OK to save the settings and close the window. That's all there is to it. Hover the mouse over the clock widget, and you should see a floating window displaying time in the selected time zones.
Not bad, but doesn't bat this
http://img.nux.ro/J7m-gnome-world-clock-weather.png
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