BIPM - Resolution 9 of the 11th CGPM

Resolution 9 of the 11th CGPM (1960)

Other Resolutions
of the 11th CGPM

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	Definition of the unit of time (second)*		(8)	(10)

The 11th Conférence Générale des Poids et Mesures (CGPM),

considering

the powers given to the Comité International des Poids et Mesures (CIPM) by the 10th CGPM to define the fundamental unit of time,

the decision taken by the CIPM in 1956,

ratifies the following definition:

"The second is the fraction 1/31 556 925.9747 of the tropical year for 1900 January 0 at 12 hours ephemeris time."

Reference:

Comptes Rendus de la 11^e CGPM (1960), 1961, 86

Note:

This definition was abrogated in 1967 by the 13th CGPM (Resolution 1).