BLL.Common.Utils.GetBaseUtcOffsetMilliseconds C# (CSharp) Метод

        public static double GetBaseUtcOffsetMilliseconds(string timezone)
        {
            if (string.IsNullOrEmpty(timezone))
                return 0;
            TimeZoneInfo tz = TimeZoneInfo.FindSystemTimeZoneById(timezone);
            return tz.BaseUtcOffset.TotalMilliseconds;
        }