Clockwork Earth

[image error] We had another earthquake tonight. Nothing too big, but it was the longest one in a while. Still the event of it happening has reenforced a theory of mine.
You see, here in Japan, we had an earthquake yesterday too. It was only just noticeable. We also had one the day before. The strange thing is that they occurred at about the same time in the day. A few weeks ago while I was at school, we had earthquakes in the afternoon, at about 2-3pm for 5 days in a row. Why are the earthquakes so regular? What could possibly happen within the earth's system to keep earthquakes occuring at the same time each day?
As you will remember, though not better than I, Japan had a huge earthquake on March 11th last year. For months after that there were many earthquakes all the frickin' time. Yet March was by far the most active month. This year again, we haven't had that many earthquakes at all since summer, but March has become active again. So not only do earthquakes tend to come at the same time in a day, but yearly as well. 
I have read some theories about this yearly occurrence. Some think that it is because in March many asteroids pass close to Earth and their gravity has an effect on our own. I didn't say the source was reliable, but I'm more interested in ideas. You should know that by now.
However, I still think that is a bit of a boring theory. A regular timetable for disasters stinks of some higher intelligence behind it all. God is pissed off. He's pissed off because he doesn't exist and he is messing with the earth to get some revenge on us real people. Another equally credible theory is that of aliens. They are regulating disasters to reduce our population and take us over when we are at more manageable numbers to subjugate. That or the Earth runs on it's own clockwork with plates shifting at precise times of the day. 
Either one of these ideas is great fodder for a spoof story or just a funny aside. Yet the question remains, what is really going on? Personally, I don't know what the human race would ever do if we actually had all the answers. It'd be a bit boring.