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Pourquoi une année bissextile compte-t-elle 366 jours ?

(French version only)
By Bhagya Subrayan, PhD Student in Physics and Astronomy, Purdue University
Depuis des siècles, les humains synchronisent leurs calendriers avec le soleil et la lune, mais de temps en temps, ces systèmes ont besoin d’une petite correction.La Conversation

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