There are two cycles of quakes ,as already mentioned in my blog
(1)When any planet changes the motion from direct to retro gate or vice a verse first cycle comprises of Moon Joining, Opposing or squaring that planet
(2) second cycle comprises of Moon joining ,squaring or Opposing the Sun in the window period of 15 days (both side) when (1) above exists

If there are more than two planets changing the direction in a short span of 3/5 days there will be even three separate cycles
In this case of more planets changing direction within short span,the quakes will be huge
Now , our case of 11.03.2010 pl note that Mars have changed the direction on 10.03.2010 and Moon directly opposing the the Mars.This date specifically selected for this reason well in advance (January 2010)
Now ,further on 15 .03.2010 we have New Moon, Moon opposing fastest moving Jupiter ,and Mars is picking up he acceleration, yhere will be yet more quakes.

I would suggest one exercise
Find the concentration of major quakes on both sides of such dates when Jupiter,Venus ,Saturn and Mars are changing the directions. The magnitudes will be in descending order from Jupiter to Mars.Mercury is having less mass and hence less pull can give quakes up to 6.2 or so
Also find the dates in past when both Jupiter and Saturn were changing the direction in a short span and major quakes in window period or say cycle dates in window period
There are on an average 6 such dates excluding Mercury when directions are changed.What actually happens when major planets changes the direction is ,it either breaks or accelerates the momentum of magma inside the crust and thus creates imbalance inside the crust.Moon,with highest pull acts as a triggers when such changes in momentum exists. Moon moves 1degree in 2 Hrs and hence accurcy expected (maximum) is +or - 2 Hrs.And this is why place can not be pin pointed. In 4 Hrs Earth moves both ways ,in Orbit and around axis giving a miss to the predicted place. Moreover, sometimes , if the crust is weak ,say a plate boundary than quake may occur earlier i.e.before full potential pull generates.
regards
Amit