The date format of RadTimePicker control is dependant on the culture used. Basically you could change the formatting by changing the culture or defini a custom date format. Please, check this help article for more details.
I hope this helps.
Kind regards,
Dani
the Telerik team
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The article does not explain how to set the time format in xaml.
Stenly
Telerik team
commented on 11 Nov 2021, 09:27 AM
Hello Paul,
Currently, the time format for the TimePicker control can only be set in code-behind, as shown in the article provided by my colleague. With this in mind, the following code snippet shows how to set the time format for the control:
this.timePicker.Culture = new System.Globalization.CultureInfo("de");
this.timePicker.Culture.DateTimeFormat.LongTimePattern = "h tt";