The guy came within two days of predicting the Nepal earthquake, which killed nearly 8,800 people last month. His unedited Facebook post confirms, he did predict an earthquake that same week.
So I think the reasoning behind predicting the earthquake was because the alignment of mercury and Mars with earth. Saying gravitational pull. But yet the day when all the planets aligned I believe nothing happened. Just saying wouldn't that had been even worse based on the guys logic
He actually wasn't too far off on the 29th... http://news.yahoo.com/6-9-magnitude-quake-strikes-offshore-alaska-usgs-071917408.html