Dr. Jinhai Wang

It was a surprise that the sky was already white-grey-blue at 4:30 in the morning in Qinhuangdao City, HeBei, China in 2018.6, 2019.5. In 1975-1979 it was still dark at 6:00 am at the same city.  The data, though 40 years apart, indicate that earth rotated 2 minutes faster each year during these last 40 years. Is this a big problem down the road or not? When speed goes up to a level, things could be spin-off, in theory.