using System;

public class Program

{

    public static void Main()

    {

        DateTime startDate;

        DateTime endDate;

        startDate = new DateTime (2023, 11, 23);

        // TimeSpan is a duration e.g. hours/minutes/seconds

        TimeSpan adjTime = new TimeSpan( 1, 2, 0);

        endDate = startDate.Add(adjTime); 

        // Use various members of DateTime to format them into strings

        Console.WriteLine("Start Date " + startDate.ToLongDateString());

        Console.WriteLine("End Date " + endDate.ToLongTimeString());

        Console.WriteLine("Start Date " + startDate.ToString("ddd, dd MMM yy"));

        Console.WriteLine("End Date " + endDate.ToString("h:mm tt"));

​

    }

}