Realme
Show or Hide the World Clock Widget on the Home Screen auf Realme
On Realme phones running Realme UI, the World Clock app and the World Clock home screen widget are controlled separately. Adding a city inside the World Clock app does not place it on the home screen automatically. A dedicated system toggle decides whether the widget is visible at all.
This separation causes confusion when a city was added correctly but never appears outside the app. It also explains why disabling the widget does not remove the saved cities themselves; it only hides the display element.
Where the toggle is located
The setting sits under Tap on Settings ➔ Tap on Additional settings ➔ Tap on Date & time ➔ Enable or disable Home screen world clock. Switching it on adds the widget to your widget list; switching it off removes it from the home screen without touching the app data.
Once enabled, treat the widget like any other home screen item: long-press to move it, drag its edges to resize it, or remove it again by dragging it to the remove option. If the widget still shows only one city after enabling it, add more cities inside the World Clock app first, since the widget only displays what is already saved there.