how to format Date Time in C#

using System;
using System.Collections.Generic;



namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            DateTime dateTime = DateTime.Now;
            Console.WriteLine(dateTime.ToString("dddd dd yyyy"));
            Console.WriteLine(dateTime.ToString("ddd dd yyyy"));
            Console.WriteLine(dateTime.ToString("HH:mm:ss"));
            Console.WriteLine(dateTime.ToString("hh:mm"));
            Console.WriteLine(dateTime.ToString("mm/dd/yyyy HH:mm"));
            Console.WriteLine(dateTime.ToString("dd/yyyy"));
            Console.WriteLine(dateTime.Year);
            Console.WriteLine(dateTime.Date);
            Console.WriteLine(dateTime.DayOfWeek);
            Console.WriteLine(dateTime.DayOfYear);
            Console.WriteLine(dateTime.Day);            
         
            Console.ReadLine();
        }
    }
}