Problem with Daylight Saving/TimeZone when using a DataSource with Scheduler

<EjsSchedule TValue="AppointmentData" Height="650px" SelectedDate="new DateTime(2018, 5, 14)">
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
</EjsSchedule>

@code{
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Paris", StartTime = new DateTime(2018, 5, 13, 10, 0, 0) , EndTime = new DateTime(2018, 5, 13, 12, 0, 0) },
        new AppointmentData { Id = 2, Subject = "Germany", StartTime = new DateTime(2018, 5, 15, 10, 0, 0) , EndTime = new DateTime(2018, 5, 15, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
    }
}