public static void Main()
Console.WriteLine("C# DateTime Format\n");
DateTime now = DateTime.Now;
Console.WriteLine(String.Format("{0:y yy yyy yyyy}", now));
Console.WriteLine(String.Format("{0:M MM MMM MMMM}", now));
Console.WriteLine(String.Format("{0:d dd ddd dddd}", now));
Console.WriteLine(String.Format("{0:h hh H HH}", now));
Console.WriteLine(String.Format("{0:m mm}", now));
Console.WriteLine(String.Format("{0:s ss}", now));
Console.WriteLine(String.Format("{0:f ff fff ffff}", now));
Console.WriteLine(String.Format("{0:F FF FFF FFFF}", now));
Console.WriteLine(String.Format("{0:t tt}", now));
Console.WriteLine(String.Format("{0:z zz zzz}", now));
Console.WriteLine(String.Format("{0:M/d/yyyy}", now));
Console.WriteLine(String.Format("{0:MM/dd/yyyy}", now));
Console.WriteLine(String.Format("{0:ddd, MMM d, yyyy}", now));
Console.WriteLine(String.Format("{0:dddd, MMMM d, yyyy}", now));
Console.WriteLine(String.Format("{0:MM/dd/yy}", now));
Console.WriteLine(String.Format("{0:MM/dd/yyyy}", now));
Console.WriteLine(String.Format("{0:t}", now));
Console.WriteLine(String.Format("{0:d}", now));
Console.WriteLine(String.Format("{0:T}", now));
Console.WriteLine(String.Format("{0:D}", now));
Console.WriteLine(String.Format("{0:f}", now));
Console.WriteLine(String.Format("{0:F}", now));
Console.WriteLine(String.Format("{0:g}", now));
Console.WriteLine(String.Format("{0:G}", now));
Console.WriteLine(String.Format("{0:m}", now));
Console.WriteLine(String.Format("{0:y}", now));
Console.WriteLine(String.Format("{0:r}", now));
Console.WriteLine(String.Format("{0:s}", now));
Console.WriteLine(String.Format("{0:u}", now));