Phenomenally useful for the amateur and the scholar

Dr. Barnharts program covers all the bases, providing a glimpse into the inner workings of the Maya calendar. It has a basic Long Count-Gregorian conversion calculator for determining dates - very handy if you are writing up notes and dont have all your books handy. The short essays on different aspects of the calendar are clearly written and up-to-the-minute. An elegant mix of scholarship and technology.

M H Robb about Maya Calendar