NJ time zone (3)

I believe the answer is:

est

(Other definitions for est that I've seen before include "Suffix showing superlative" , "Time Americans adopted" , "self-improvement programme" , "psychological programme" .)

I've seen this clue in The Star Tribune and the USA Today.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.