Nov 28: Lunar Eclipse and Possible MegaQuake
This is the closest date for an eclipse to the end of the Mayan calendar. And according to my research, lunar eclipses (and a day or so either side) have double the odds of a major earthquake compared to the average. While most earthquake experts will tell you a megaquake of 10+ cannot happen, I consider it to be a possibility.
Nov 28 is the date I am most concerned about, besides Dec 21. But don’t be overly alarmed, I reckon it would be impossible for the Mayan calendar to be solely an earthquake prediction. That doesn’t mean there wouldn’t be an earthquake, it just means that something else would be triggering the quake. Patrick Geryl suggests the Sun is the trigger.