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Cite secunde are un an?

Răspuns :

o zi =24x60x60=86400s
365zile=86400x365=31536000s
an normal
1an=365 zile
365 zile=8760 ore
8760 ore=525600 minute
525600 minute=31536000 secunde

an bisect
a an=366 zile
366 zile=8784 ore
8784 ore=527040 minute
527040 minute=31622400 secunde