The 28th General Conference on Weights and Measures on the 15th in Versailles,
France adopted a resolution to implement "continuous Coordinated Universal Time"
from 20 May 2027. The change means UTC will no longer be adjusted by adding or
subtracting leap seconds and could remain continuous for several centuries. UTC
is currently the only time scale recommended as an international reference; it
runs at the same rate as International Atomic Time while historically using leap
seconds to stay close to Earth-rotation-based Universal Time. Since 1972, UTC
has added or removed one second when the monitored difference reached 0.9s.
Under the resolution the maximum permitted difference going forward is set at
3,600 seconds (one hour).
