using System;

public class Program

{

    public static void Main()

    {

        var timeZoneId = "Australia/Currie";

        var dateString = "2024-10-06";

        // Arrange

        var date = new DateTime(2023, 09, 30, 1, 0, 0);

                            Console.WriteLine($"date: {date}");

​

        var timeZone = TimeZoneInfo.FindSystemTimeZoneById(timeZoneId);

​

        // Act

        var nextDay = date.AddDays(1);

        var duration = TimeZoneInfo.ConvertTimeToUtc(nextDay, timeZone) - TimeZoneInfo.ConvertTimeToUtc(date, timeZone);

​

        // Assert

        // The duration should be 23 hours when DST ends and 25 hours when DST starts.

        var correct = (duration.TotalHours == 23 || duration.TotalHours == 25);

        if (!correct) {

            Console.WriteLine($"Duration was {duration.TotalHours} hours, not 23 or 25");

        } else {

            Console.WriteLine($"Duration was {duration.TotalHours} hours");

        }

    }

}