using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var zones = TimeZoneInfo.GetSystemTimeZones();

        Console.WriteLine("The local system has the following {0} time zones", zones.Count);

        foreach (TimeZoneInfo zone in zones)

        {

            Console.WriteLine(zone.Id.PadRight(50) + zone.Id.Length);

        }

        var longestTimeZone = zones.Max(tz => tz.Id.Length);

        Console.WriteLine();

        Console.WriteLine("Longest TimeZone Length: " + longestTimeZone);

    }

}