using System;
using System.Globalization;
public class Test
{
public static void Main()
{
String input = "28/09/2012";
DateTime dt = DateTime.ParseExact(input, "dd/MM/yyyy", CultureInfo.InvariantCulture);
String output = dt.AddMonths(2).ToString(CultureInfo.CreateSpecificCulture("en-US"));
Console.WriteLine(output);
}
}
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