Precessional Cycle Length of ~26,000 years (approximated by science, assuming constant rate of change based on modern measurements. Arbitrarily ending at Dec 21 2012) (21 dic 23988 anni a. C. – 21 dic 2012 anni)
Aggiunto al nastro di tempo:
Data:
21 dic 23988 anni a. C.
21 dic 2012 anni
~ 26019 years