using System;
using System.Globalization;

public class Test
{
	public static void Main()
	{
		string data1 = "01/08/2016 9:00 AM";
		string data2 = "01/08/2016 9:00 PM";
		
		DateTime dataOut;
		
		if(DateTime.TryParse(data1, out dataOut))
		{
			Console.WriteLine(dataOut.ToString("HH:mm ", CultureInfo.InvariantCulture));
		}
		
		if(DateTime.TryParse(data2, out dataOut))
		{
			Console.WriteLine(dataOut.ToString("HH:mm ", CultureInfo.InvariantCulture));
		}
	}
}