1 Creating IntlDateFormatter with timezone_id = America/New_York
2 After call to get_timezone_id : timezone_id= America/New_York
4 Creating IntlDateFormatter with timezone_id = US/Pacific
5 After call to get_timezone_id : timezone_id= US/Pacific
7 Creating IntlDateFormatter with timezone_id = US/Central
8 After call to get_timezone_id : timezone_id= US/Central