Source-backedFixed AnnualIn-depth guide
Anniversary of the Arengo
San Marino official sources list 25 March as the Anniversary of the Arengo of 1906, alongside the Feast of the Militias.
Country observance hub
San Marino observances
4 source-backed records whose verified scope explicitly identifies San Marino. This is an observance index, not a public-holiday calendar.
Country-specific observances
San Marino observance library
Source-backedFixed AnnualIn-depth guide
Anniversary of the Fall of Fascism and Freedom Day
San Marino official holiday calendars list 28 July as the Anniversary of the Fall of Fascism and Freedom Day.
Source-backedFixed AnnualIn-depth guide
Anniversary of the Liberation of the Republic from Alberonian occupation
San Marino’s official holiday information lists 5 February as the anniversary of liberation of the Republic from Cardinal Alberoni’s occupation, together with the feast of Saint Agatha.
Source-backedFixed AnnualIn-depth guide
Foundation Day / National Day of San Marino
Government diplomatic sources identify 3 September as San Marino’s national/foundation day