A calendar created in 813 has been rediscovered in Florence, where the discrepancy between the Julian calendar and the solar year is already corrected. This discovery predates the full recognition of this phenomenon by more than seven centuries, which was only formalized with the Gregorian Reform of 1582. The discovery is the result of a […]
Read MoreGalileo and the birth of Gregorian calendar
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In a recent publication contained in the Proceedings of the 43rd Annual Conference (Padua, 5-8 September 2023) and in a volume of the Academy of Sciences and Letters la Colombaria of Florence dedicated to Copernicus, Francesco Vizza, Senior Associate Researcher, former Director of CNR-ICCOM and scholar of the Gregorian calendar, connects the Gregorian calendar with […]
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