protected function getOffsetFromAbbr(string $zone): string
    {
        $zone = timezone_name_from_abbr(strtolower($zone));
        return $this->getOffsetFromLocation($zone);
    }
protected function getOffsetFromAbbr(string $zone): string
    {
        $zone = timezone_name_from_abbr(strtolower($zone));
        return $this->getOffsetFromLocation($zone);
    }
protected function getOffsetFromAbbr ( string $ zone ) : string { $ zone = timezone_name_from_abbr ( strtolower ( $ zone ) ) ; return $ this -> getOffsetFromLocation ( $ zone ) ; }
returns the offset based using the
timezone abbreviation

@param *string $zone The timezone to calculate the offset with

@return string
returns the offset based using the timezone abbreviation