Another Yahoo article has it as 1.26 milliseconds.
So, which is it? This is important! I need to know how much my misery has been reduced each day - by the negligible one millionth of a second, or the more significant one thousandth of a second.
” JPL research scientist Richard Gross computed how Earth’s rotation should have changed as a result of the Feb. 27 quake. Using a complex model, he and fellow scientists came up with a preliminary calculation that the quake should have shortened the length of an Earth day by about 1.26 microseconds (a microsecond is one millionth of a second).”
http://www.jpl.nasa.gov/news/features.cfm?feature=2504