60 Million Years Ago, a Day Lasted Just 21 Hours! Know How the Change Came
One day is 24 hours. But a study of science has come out which suggests that 60 million years ago, it used to be 21 hours a day. The rotation of the Earth is slowing down, which increases the day's length by an average of about 1.8 milliseconds per cent. For this reason, there us...
