|Each world map is custom printed on state-of-the-art
mylar film using specially-formulated inks designed
to make the map resistant to ultraviolet light.
The Geochron map is reproduced in part from Chronoflexpositives
of the U.S. Naval Oceanographic Chart #1262.
Legal time zone information is based on data from
the U.S. Department of Defense Mapping, Time Zone
Delineation of the timezones and designs of the
time scale are original with Geochron.