Laravel 5.3 - Carbon Date - UTC offset get timezone name

I am trying to get a timezone name from a UTC offset in Laravel 5.3 using Carbon. Code listed below any help would be much appreciated.

/* current code iteration */
$utcOffset = -5;
$timezone = Carbon::now($utcOffset)->timezone->getName();
echo $timezone;
// Result: -05:00
// Expected Result: EST

/* tried code */
$timezone = Carbon::now($utcOffset)->tzName;
// Result: -05:00

/* What I used prior to Carbon */
$timezone = timezone_name_from_abbr(null, $utcOffset * 3600, TRUE);
$dateTime = new DateTime();
$dateTime->setTimeZone(new DateTimeZone($timezone));
$timezone = $dateTime->format('T');'

What am I missing? I feel daft..

via Colton Wagner