Possible Clues:

• Phoenix setting: Abbr.
• Salt Lake City zone: Abbr.
• Colo. time
• Sante Fe hrs
• Ft. Collins clock setting
• Two hrs. earlier than N.Y.
• A U.S. time zone
• Winter hrs. in the Rockies
• U.S. time zone
• ___3K (familiar shortening of an old cult TV series)