using System;

public class Program

{

    public static void Main()

    {

DateTime JobCalismaSaati = new DateTime(2020,8,6,11,0,0,0,DateTimeKind.Local);

Console.WriteLine("Job Çalışma Saati: " + JobCalismaSaati.ToString("yyyy-MM-ddThh:mm:ss"));

Console.WriteLine("----------");                    

Console.WriteLine("UTC Start Date: " + JobCalismaSaati.ToUniversalTime().AddDays(-1).ToString("yyyy-MM-ddT00:00:00"));

Console.WriteLine("UTC Start Date: " + JobCalismaSaati.ToUniversalTime().AddDays(-1).ToString("yyyy-MM-ddT23:59:59"));

Console.WriteLine("----------");

Console.WriteLine("Yerel Start Date: " + JobCalismaSaati.AddDays(-1).ToString("yyyy-MM-ddT00:00:00"));

Console.WriteLine("Yerel Start Date: " + JobCalismaSaati.AddDays(-1).ToString("yyyy-MM-ddT23:59:59"));

    }

}