The ceremonial currency was part of the bicentennial celebration of 1976. The bicentennial celebration was an event in memory of the American Revolution. During this day, a set of commemorative coins were circulated. It consists of a half dollar, a quarter and a dollar. Each of the coins has the date 1776-1976.
I am sorry, I am not a Spanish native. Hence, it is hard for me to understand what you are saying? Is it possible for you to write it English, that way I can provide a more reasonable answer to your problem. Enjoy your day!
It was the Mesoamerican civilization of the Mayans that created a 365-day calendar and had skilled astronomers, since these people were ahead of their time in terms of many of the sciences.