Please make sure that the start hour and the end hour are not set to 00:00:00.
If you are creating appointments from the inline form of the RadScheduler, the appointments are automatically created as all day appointments, the same happens if the all day check box in the advanced form is checked.
If this is not the case, could you please provide us with a sample page with the problem isolated in it, so we will be able to troubleshoot the issue locally.
the Telerik team
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