using System;

public class Program

{

    private static string GenerateFileName(string channelCode, string recordingHostCode, string recordingSource,DateTime from, DateTime to, string fileExtension)

    {

        return string.Format("{0}_{1}_{2}_{3:yyyyMMddHHmmss}_{4:yyyyMMddHHmmss}{5}", channelCode, recordingHostCode, recordingSource, @from, to, fileExtension);

    }

    public static DateTime ConvertToUtc(DateTime input, string timezoneId)

    {

      TimeZoneInfo systemTimeZoneById = TimeZoneInfo.FindSystemTimeZoneById(timezoneId);

      return TimeZoneInfo.ConvertTimeToUtc(new DateTime(input.Ticks, DateTimeKind.Unspecified), systemTimeZoneById);

    }

    public static void Main()

    {

        const string channelCode = "USR083KESN-FM";

        const string recordingHostCode = "us-east";

        const string recordingSource = "i0";

        const string extension = ".vs450.mp4";

        const string timezone = "Eastern Standard Time";

        const int broadcastDateStartOffsetInHours = 0;

        const int broadcastDurationInHours = 16;

        DateTime fromDate = new DateTime(DateTime.UtcNow.Year, DateTime.UtcNow.Month, DateTime.UtcNow.Day);

        DateTime lastAssetEndDate = ConvertToUtc(fromDate.Add(TimeSpan.FromHours(broadcastDateStartOffsetInHours)).Add(TimeSpan.FromHours(broadcastDurationInHours)), timezone);

        DateTime currentDate = ConvertToUtc(fromDate.Add(TimeSpan.FromHours(broadcastDateStartOffsetInHours)), timezone);

        Console.WriteLine("From    : {0:yyyyMMddHHmmss}", currentDate);

        Console.WriteLine("To      : {0:yyyyMMddHHmmss}", lastAssetEndDate);

        Console.WriteLine("Filename: {0}", GenerateFileName(channelCode, recordingHostCode, recordingSource, currentDate, lastAssetEndDate, extension));

    }

}