Days on Earth getting longer as Moon is going farther: Study
A US-based study has found that the average day length on Earth is growing by 1/75,000 second per year, as the Moon is slowly drifting apart. Researchers also claimed Earth had a 18.7-hour rotational period 1.4 billion years ago. They further predicted the Moon would reach a stable distance when it will be visible only from one half of Earth.