QT QT Early Warning System December 30, 2016 No Comments The Sub-Bureau for Rapid Service and Predictions of Earth Orientation of the International Earth Rotation Service has announced there will be a leap second added to civil time at midnight December 31. Plan accordingly. Previous Post Next Post You may also like October 4, 2018 QT Planetary Defense Coordination Office April 28, 2017 High crimes and misdemeanors in the news December 18, 2017 Breaking news. . . .