[LEAPSECS] drift of TAI

[Tom Van Baak]

> Along those lines ...

> The earliest use of the term UTC as such (and TUC in the French) that

> I have found is in the Jan/Feb 1964 Bulletin Horaire from the BIH.

> This was the first issue done by Guinot after Anna Stoyko gave it up.

> 

> Does anyone know of a use of the term UTC/TUC which predates that?


Steve,

I don't have one earlier than your 1964.

Essen, 1958, no mention of UTC (way too early):
http://www.leapsecond.com/history/1958-PhysRev-v1-n3-Markowitz-Hall-Essen-Parry.pdf

Essen, 1968, mentions UTC, and proposes what would become leap seconds:
http://www.leapsecond.com/history/1968-Metrologia-v4-n4-Essen.pdf

/tvb