They fall in the time zone UTC-7 (Mountain Time), while the major part of Colima is UTC-6 (Central Time Zone). Clarión is comparatively far to the west, by more than 200 km in comparison with the inner islands, and in UTC-8 (Pacific Time Zone). The Revillagigedo Islands are one of three Mexican island groups in the Pacific Ocean that are not on the continental shelf; the others are Guadalupe Island and Rocas Alijos.