Ligne internationale de changement de date
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<timefyi-glossary slug="international-date-line"></timefyi-glossary>Définition
Une ligne imaginaire dans l'océan Pacifique, approximativement à 180° de longitude, où la date change lorsqu'on la franchit. La traverser vers l'ouest avance d'un jour ; vers l'est, la recule d'un jour.