Map of the United States of America showing the four time zones. From left to right, the time zones are Pacific in Purple, Mountain in Yellow where I am located, green for Central, and blue for Eastern time zone. This map also shows the location of Idaho in the northwest United States, note northern Idaho is in pacific time zone while most of Idaho and including where I live is in the Mountain time zone. Mountain time is one hour earlier than Pacific, one hour earlier than central and two hours later than eastern time.