public static bool IsTimeZoneEqual(double metadataLocationLatitude, double metadataLocationLongitude, DateTime dateTimeMediaTaken, DateTime dateTimeLocation, out string TimeZoneVerfification)
{
DateTime dateTimeMediaTakenWithoutZone = new DateTime(dateTimeMediaTaken.Ticks);
DateTime dateTimeLocationUTC = new DateTime(dateTimeLocation.ToUniversalTime().Ticks, DateTimeKind.Utc);
TimeZoneInfo timeZoneInfoGPSLocation = TimeZoneLibrary.GetTimeZoneInfoOnGeoLocation(metadataLocationLatitude, metadataLocationLongitude);
if (timeZoneInfoGPSLocation != null)
{
TimeSpan timeSpanForDate = timeZoneInfoGPSLocation.GetUtcOffset(dateTimeLocation);
TimeZoneVerfification =
"Media Digitized: " + dateTimeMediaTakenWithoutZone.ToString() + "\r\n" +
"GPS UTC date/time: " + dateTimeLocationUTC.ToString() + "\r\n" +
"Time zone name (Lat,Long): " + timeZoneInfoGPSLocation.DisplayName + "\r\n" +
"Base UTC offset (Lat,Long): " + timeZoneInfoGPSLocation.BaseUtcOffset.ToString() + "\r\n" +
"Daylight/Standard time (GPS clock):" + (timeZoneInfoGPSLocation.IsDaylightSavingTime(dateTimeLocationUTC) ? timeZoneInfoGPSLocation.DaylightName : timeZoneInfoGPSLocation.StandardName) + "\r\n" +
"Offset UTC offset (GPS clock): " + timeZoneInfoGPSLocation.GetUtcOffset(dateTimeLocationUTC).ToString() + "\r\n" +
"Time Span between GPS and Digitized: " + timeSpanForDate.ToString();
return(IsTimeSpanEqual(timeSpanForDate, timeZoneInfoGPSLocation.GetUtcOffset(dateTimeLocationUTC), 15));
}
else
{
TimeZoneVerfification =
"Media Digitized: " + dateTimeMediaTakenWithoutZone.ToString() + "\r\n" +
"GPS UTC date/time: " + dateTimeLocationUTC.ToString() + "\r\n" +
"Time zone name (Lat,Long): GPS location incorrect\r\n" +
"Base UTC offset (Lat,Long): GPS location incorrect\r\n" +
"Daylight/Standard time (GPS clock): GPS location incorrect\r\n" +
"Offset UTC offset (GPS clock): GPS location incorrect\r\n" +
"Time Span between GPS and Digitized: Unknown: GPS Location unknown";
return(false);
}
}
public static TimeSpan?CalulateTimeDiffrentWithoutTimeZone(string dataTimeString1, string dateTimeString2)
{
DateTime?dateTime1 = TimeZoneLibrary.ParseDateTimeAsUTC(dataTimeString1);
DateTime?dateTime2 = TimeZoneLibrary.ParseDateTimeAsUTC(dateTimeString2);
return(CalulateTimeDiffrentWithoutTimeZone(dateTime1, dateTime2));
}