🇬🇧 – 🇮🇹 In 1902 the archaeologist Spyridon Stais found the Antikythera Mechanism (see detail in the photo), a mechanical device dated between 250 and 100 BC, considered to be the oldest known mechanical calculator. It was originally a sophisticated planetarium, moved by cogwheels, which was used to calculate the rising of the sun, the phases of the moon, the movements of the five planets then known, the equinoxes, the months, the days of the week and – according to a study published on Nature the dates of the Olympic Games. It was found in the wreck of Antikythera, among the remains of a shipwreck that took place in the second quarter of the 1st century BC. near the Greek island of Cerigotto (Antikythira in the local language).