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Science29 décembre 2016
© PixabayTemps additionnel
31 décembre : la moitié de la planète devra patienter une seconde de plus avant de célébrer 2017
La seconde "additionnelle" aura pour but d'harmoniser les deux échelles de temps qui existent aujourd'hui : l'échelle du temps universel, et celle du temps atomique international.
31 décembre : la moitié de la planète devra patienter une seconde de plus avant de célébrer 2017
Vu sur: Lu sur Quartz