Any samsung android device released after Samsung Galaxy S3 and before Samsung galaxy Star using stock ROM and has the accuweather widget not removed.
First to configure cities, open the weather app by just tapping on the widget. (Obviously you need to have the widget paced on one of your Homescreens . If not set up, you will be prompted to configure it by adding a city. When configured, tap the icon on top right below status bar. There will be a list of configured cities. Tapp the + button to add cities. P.S- You need internet to add cities .
When done, go back to the Homescreen. In the weather widget, swipe up or down, it will cycle through added cities with their local times respectively.
Now checking World Time is a bit easy I guess, and its a useful tip for football fans especially .
Hit thanks if helped