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CALENDAR COVER:
EARTH/MARS DUAL CALENDAR

With the growing interest in Mars this dual calendar system is for the celestial traveler. It helps keep track of Earh's 12 months and Mars' 16 month (with 22 days each) calendar.

Copyright © 1999-2002
Michael Hamers

Earth & Mars dual calendar
   
   
 
     
Copyright © 2002, Lightspeed Commercial Arts