Hi Shan,

Moon and tide theories have been evaluated to death and the general scientific concensus is that they do not work any better than random chance. One can cite a few earthquakes of course which would fall into that pattern, however, on the whole, it's not very promising. As the scientists like to say, "if it worked, don't you think we would be using it?"

What might be helpful is to take a list of the largest earthquakes which occurred and find the Moon/Tide information and find out for yourself. I think the NEIC site or I'm the sure the USGS site has a list going back to 1769 you can use. To make it easy you might just use the Moon information and that should do it.

Petra