When days are getting longer

The rotation of the Earth on its axis defines our natural measure of time. But the Earth’s rotation is subject to constant fluctuations due to a variety of influences. Therefore the international atomic time and the solar time defined by the earth’s rotation gradually drift apart. In order to compensate this difference, a leap second is added at irregular intervals at the end of a year.
When days are getting longer captures this ephemeral, at first glance seemingly impossible momentum, questioning both the measurability and the systematization and normalization of the construct of time.