using System;

public class Program

{

    public static void Main()

    {

        var timezones = TimeZoneInfo.GetSystemTimeZones();

        var date1 = new DateTime(2015, 1, 15);

        var date2 = new DateTime(2015, 7, 15);

        Console.WriteLine(String.Format("{0,-62} {1,-32} {2,-32} {3,-15} {4,-20} {5,-20}", "Display Name", "Standard Name", "Daylight Name", "Supports DST", "UTC Standard Offset", "UTC Daylight Offset"));

        Console.WriteLine(String.Format("{0}", "".PadRight(186, '-')));

        foreach (var timezone in timezones)

        {

            var o1 = timezone.GetUtcOffset(date1);

            var o2 = timezone.GetUtcOffset(date2);

            var o1String = " 00:00";

            var o2String = " 00:00";

            if (o1 < TimeSpan.Zero)

                o1String = o1.ToString(@"\-hh\:mm");

            if (o1 > TimeSpan.Zero)

                o1String = o1.ToString(@"\+hh\:mm");

            if (o2 < TimeSpan.Zero)

                o2String = o2.ToString(@"\-hh\:mm");

            if (o2 > TimeSpan.Zero)

                o2String = o2.ToString(@"\+hh\:mm");

​

            Console.WriteLine(String.Format("{0,-62} {1,-32} {2,-32} {3,-15} {4,-20} {5,-20}", 

                                            timezone.Id, 

                                            timezone.StandardName, 

                                            timezone.DaylightName, 

                                            timezone.SupportsDaylightSavingTime ? "Yes" : "No",

                                            o1String,

                                            o2String));

        }

    }

}