No, they are not the same. Mountain Time is one hour ahead of Pacific Time. Pacific Time is one hour behind Mountain Time. The mainland U.S. has four time zones (Alaska and Haâ¦waii each have their own time zones, which makes a total of 6 different time zones for the U.S.). From west to east, the mainland U.S.'s time zones are: Pacific Time, Mountain Time, Central Time and Eastern Time.