[tz] historic sub-second time offsets

Paul_Koning at dell.com Paul_Koning at dell.com
Wed Nov 5 19:29:07 UTC 2014

On Nov 5, 2014, at 2:15 PM, Paul Eggert <eggert at CS.UCLA.EDU> wrote:

> On 11/05/2014 07:47 AM, Steve Allen wrote:
>> 1960 is after the availability of cesium atomic chronometers and
>> during the era when Heure Definitive was UT2.
> Was heure définitive really UT2?  My French is pretty weak, but page 253 of your source has a table entitled "Temps Universel 2 - Heure Définitive", which makes it appear to be listing the difference between UT2 and heure définitive.  

No, I think that’s a dash in that table heading, not a minus sign.  In other words, the two phrases are synonyms.  That is supported by the text on slide 5 (page 258), just below the middle, which says “Les heures définitives (TU2)...”.


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