Pacific, e.g

• China has only one, surprisingly
• Alaska or Hawaii
• New York's is Eastern
• One of The United States' six
• Eastern or Pacific, e.g
• Central or Mountain, e.g
• One of four between N. Y. and Cal
• Atlantic or Pacific
• Mountain, e.g.

Wiktionary Word definitions in Wiktionary
n. (alternative spelling of time zone English) (context chiefly US) A vertical region of the globe that somewhat corresponds to longitude, that uses the same time.