[LEAPSECS] Back to Basics

[Michael Deckers]

    On 2010-11-03 18:25, Steve Allen wrote:


>  Remember that the standing CGPM resolution says that UTC is

>  mean solar time.

>  http://www1.bipm.org/jsp/en/ViewCGPMResolution.jsp?CGPM=15&RES=5


    No. It says "approximation to .. mean solar time". That this is
    meant is grammatically unambiguous in the French text:

      "..que sa diffusion fournit aux utilisateurs à la fois des
       fréquences étalons, le Temps atomique international et une
       approximation du Temps universel (ou si l'on préfère,
       du temps solaire moyen),.."
       ^^ approximation du..

    And certainly, UTC _is_ an approximation of UT1.

    Michael Deckers.