I’ll start this off with mentioning that I’m on Plasma 5.7.2 so you might not see these features (yet!).
Since I started working with a global team I’ve hit the unforgiving thing called Time Zones, so my first feature will be covering the ‘Digital Clock’ widget. I’m sorry to report that those of you who love that ‘Fuzzy Clock’ widget are missing this feature. With this widget I can add Time Zones by simply right-clicking the widget if it’s one of your panels already or on your desktop.If the widget is in the panel then you can just right click it like so. (Look above)
But if you have the widget on your desktop you have to press and hold it with left click like so. (Look above)
It will turn a light blue and a pop up will well… pop up with some buttons. The bottom one is the one we want. (Look above)
Either from the panel widget or the desktop widget we will get this window. (Look above) From here we can search for Time Zones based on cities ex. London being the capital of England or my state falling into the Time Zone of New York.
Aaron Honeycutt: Plasma features – The endless search Pt.1
Source: Planet Ubuntu