San Marino National Holiday / Foundation of the Republic (301 A.D.) 2027 in San Marino

San Marino’s calendar lists its National Holiday on 3 September, with the Italian title San Marino / Patrono e Fondatore della Repubblica and a reference to the Republic’s foundation in 301 A.D. That year is part of the supplied holiday description; the record does not establish historical evidence for the date or explain local commemorations. The calendar supports the date and PUBLIC classification. Official San Marino sources would be needed to confirm the holiday’s legal status and authoritative historical account.