~ ~ ~ “I consider this map as important to understanding the reality of Time as Buckminster Fuller’s ‘Dymaxion Map’ and Tom Van Zant’s ‘Geosphere’ are to viewing the real world without distortion.” Mark Sutton, former CEO, Aperion, Inc.
Former Computer Visualization Coordinator for NASA’s TRMM and TERRA Satellite Missions.”

~ ~ ~ “Nancy Baumgarten’s Orbital Calendar is the most ingenious reconciliation of astronomical and calendar cycles I have seen. Baumgarten’s amazing achievement is all the more interesting from the viewpoint of my book Tzolkin because the 2080-year mega-Venus Round cycle that I wrote about was incorporated as a large tzolkin-based planetary cycle into the Orbital Calendar. Beyond this welcome recognition and inclusion of my work, the Orbital Calendar is valuable for anyone who wants to track the multiple inter-related cycles that weave our world and impinge upon our everyday reality. “
John Major Jenkins, “Maya Cosmogenisis 2012”

~ ~ ~ “Nancy Baumgarten’s Earth Orbital Calendar is a unique way to capture student interest while introducing a variety of math topics from pre-algebra all the way through pre-calculus. The union of a 360 degree circle and a 365 day year make this an ideal tool for investigating number relationships. Greatest common factors, least common multiples, systems of equations, and properties of a circle are just a few of the many lessons topics possible when discussing this model. All the while, interdisciplinary connections between history and science help to enrich the learning experience. The Earth Orbital Calendar is a teacher’s key to creating math lessons that help students develop a sincere desire for understanding how our world works.” Chad Vahue, Middle School Science Teacher