Historical events for
Monday, 31 May 2027

King Manuel I (born May 31, 1469, and died December 13, 1521) was the fourteenth King of Portugal. During his historic reign, known as "The Fortunate", the country reached the apex of its imperial expansion with the discovery of the sea route to India by Vasco da Gama and the official arrival in Brazil by Pedro Álvares Cabral.

Ron Toomer (b. 1930) was a legendary American mechanical engineer who revolutionized global amusement ride design. After developing heat shields for NASA's Apollo spacecraft, he pioneered tubular steel technology to create the world's first looping steel roller coasters, designing over 80 major rides.

Liturgical celebration of Saint Petronilla, an early Christian virgin venerated in Rome and traditionally associated by popular piety with the healing of physical ailments. Closes the hagiographical body of May in the traditional Portuguese calendar.

By royal charter, eighteen female schools are formally established in Portugal, marking the creation of the first public education institutions dedicated exclusively to girls in the country's history. The milestone represented a pioneering, though initial, step in women's access to formal instruction.

Belgian chemical engineer Edward de Smedt is granted a United States patent for laying modern sheet asphalt pavement. The innovative method of mixing sand with asphalt compounds fluxed with petroleum oils facilitated urban road paving, debuting with absolute success in Newark.

Sport Lisboa e Benfica is crowned European football champion for the first time in its history by defeating Barcelona's super-team 2-1 at the Wankdorfstadion in Bern. Captained by the charismatic Mário Coluna, the eagles broke Real Madrid's monopoly and inaugurated a golden era for Portuguese football.

Mário Soares, Raul Rêgo, Salgado Zenha, and other prominent regime opponents meet clandestinely in Porto for the Convention of the Portuguese Socialist Action (ASP). The political resistance gathering against the dictatorship consolidated the ideological and organizational foundations that would give rise, in 1973, to the Socialist Party.

Date established by the Member States of the World Health Organization (WHO) aiming to alert the global population to the tobacco epidemic, highlight the health risks associated with tobacco use, and promote effective public policies for consumption reduction.

The World Health Organization (WHO) formally classifies the Delta variant (B.1.617.2) of the SARS-CoV-2 virus as a Variant of Concern. Originally identified in India, the strain triggered global alarms due to its substantially elevated transmissibility rate and its impact on the efficacy of pioneering vaccines.

Holding of the historic Saint Peter Fair in the picturesque Largo de São Pedro de Penaferrim, Sintra. With origins dating back to the Middle Ages, this traditional market gathers artisans, agricultural producers, and merchants, constituting one of the largest cultural attraction hubs and intangible heritage of the Lisbon region.