Not too impressive. This means that 2006 will arrive 1 millisecond sooner than it otherwise would have, and 3006 will arrive 1 second sooner. We won't gain a whole day from this until 80 million years from now.
Another way to look at it: The earth's rotation period is slowing by 15 microseconds per year due to tidal friction with the moon; so the quake had the effect of undoing about 10 weeks' worth of tidal friction. In 100 million years the day will be about 24 hours and 25 minutes long. (This means that at the time of the first dinosaurs, the day was 23 hours long.)
Thanks for crunching the numbers! heehee
It is not friction. The moon pulls a bulge in the ocean. Because the earth rotates faster than the moon orbits the earth, this bulge is ahead of the moon. This bulge pulls the moon to go faster and the moon pulls on the bulge, slowing the earth.
Basically, any object inside geosynchronous orbit will slow down itself and speed up the earth. Outside and the object will gain energy and slow down the earth. One of the 2 martian moons is inside geosync orbit and will crash into mars. Our moon is outside geosync orbit and eventually will drift away.