On 1/3/2017 2:47 PM, Patrik Fältström wrote: > On 3 Jan 2017, at 20:10, Joe Touch wrote: > >> They nearly universally use UTC, which is managed by the ITU. > UTC is managed by BIPM in Paris, based on the Metre Convention. > > The governance of BIPM can be found here: > > <http://www.bipm.org/en/about-us/governance/> > > Leap seconds are defined by ITU-R, and decided upon by International Earth Rotation and Reference Systems Service (IERS). <https://www.iers.org/> > > And possibly more pieces of the puzzle are needed. > > So, "its complicated". ;-) Agreed. Arguably, UTC is calculated by BIPM including leap-second recommendations by IERS, but the ITU represents its global adoption. Details not particularly important to this discussion; the point is that this is a complex issue that has already been addressed. I fail to see why we just don't consider the Posix definition erroneous and move on... Joe