http://www.jpl.nasa.gov/news/news.php?feature=4643&utm_source=iContact&utm_medium=email&utm_campaign=NASAJPL&utm_content=weekly20150702-4
https://en.wikipedia.org/wiki/Leap_second
You ask 'geocentrists' to explain what? In a geocentric scenario it is the rotation of the universe that brings about the time of a day. So if a day slows it is the universe that is slowing. God must be getting tired.
Did you read the article:
VLBI tracks these short- and long-term variations by using global networks of stations to observe astronomical objects called quasars. The quasars serve as reference points that are essentially motionless because they are located billions of light years from Earth. Because the observing stations are spread out across the globe, the signal from a quasar will take longer to reach some stations than others. Scientists can use the small differences in arrival time to determine detailed information about the exact positions of the observing stations, Earth's rotation rate, and our planet's orientation in space.
Solar time and sidereal time are different:
https://en.wikipedia.org/wiki/Sidereal_time
A solar day (86,400.002 seconds) is longer than a sidereal day (86,164.1 seconds) and those values are changing at different rates.
yes Jehanne, I am aware that a star day is four minutes less than a solar day leading to precession of the equinoxes. This applies to both G and H systems.
Now you and others trying to debunk the G system bringing up all kinds of proofs of falsifications of geocentrism should really be competing with the relativity of science, begun by Mach and Einstein and taken up by thousands of physicists since then.
If you guys are correct and have actually made the break through you claim I suggest you submit your proofs to the world's scientific academies and you would all become famous. Imagine, proving Mach and Einstein wrong, what an achievement.
So why waste your time and talents on this forum and go show the world of modern science you can PROVE the H system is true after all.