Note: This calendar view maps the number of captures of https://fr.unesco.org/creative-cities/events/heidelberg-et-grenade-co%C3%A9criture-de-l%E2%80%99%C5%93uvre-%C2%AB-ossip-mandelstam-mots-et-destin%C3%A9e-%C2%BB, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.