The earliest known inscription with a Tzolkʼin is an Olmec earspool with 2 Ahau 3 Ceh - 6.3.10.9.0, September 2, -678 (Julian astronomical).
The earliest known inscription with a Tzol,kʼin is an Olmec earspool with 2 Ahau 3 Ceh - 6.3.10.9.0 Septem,ber 2 -678 (Julian astronomical).