using System;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        DateOnly someDate = new DateOnly();

        Console.WriteLine(someDate); // 01.01.0001

        TimeOnly time = TimeOnly.Parse("06:33:22");

        Console.WriteLine(time); // 6:33

        time = time.AddHours(1); // 7:33

        time = time.AddMinutes(-23); // 7:10

        Console.WriteLine(time.ToShortTimeString()); // 7:10

        Console.WriteLine(time.ToLongTimeString()); // 7:10:22

    }

}