Currently, RadTimePicker offers a Value property, typeof(DateTime?) even though the control is designed to manage time values.
With releasing .NET 6, there is TimeOnly type which would be more appropriate for managing time values:
//from 22:00 till 07:00 the next day. this.radTimePicker1.MinValue = DateTime.Today.Date.AddHours(22); this.radTimePicker1.MaxValue = DateTime.Today.Date.AddDays(1).AddHours(7);