Last I heard, days were getting unaccountably shorter, such that they were threatening to impose a reverse-leap second, or "lop second", with a select minute only 59 seconds long, rather than 61 for the usual case.
Covered in the article. They got shorter and now they are getting longer.
Scientists should keep an eye on activity in the Pacific Ocean, and earthquakes around it.
Why?
Another Kaiju reference?
Dzhanibekov effect / tennis racket theorem. The flippening is nigh!