October 31
Halloween {aka All Hallows' Eve or All Saints' Eve} (USA, Ireland, Canada, UK, & other countries in Europe, North America, South America, & Asia)
Samhain begins {in the Northern hemisphere} (Gaels, Welsh & Neopagans)
Reformation Day (Slovenia & Protestant churches)
ROYAL BIRTHDAYS
Count Carl Johan Bernadotte of Wisborg {1916} [formerly known as Prince Carl Johan of Sweden, Duke of Dalarna] (uncle of King Carl XVI Gustaf of Sweden)
King-Father Norodom Sihanouk of Cambodia {1922}
Princess Margaretha of Sweden {1934} (sister of King Carl XVI Gustaf of Sweden)
Princess Norberta "Nora" of Liechtenstein, Countess of Rietberg, Dowager Marchioness of Marino {1950} (sister of Prince Hans-Adam II of Liechtenstein)
Crown Prince Reza Pahlavi of Iran {1960}
Maria de Fatima Simonetta Gomez-Acebo y de Borbon {1968} [daughter of Infanta Pilar of Spain, Duchess of Badajoz, Dowager Viscountess de la Torre (sister of King Juan Carlos I of Spain)]
Infanta Leonor of Spain {2005} [daughter of Infante Felipe of Spain, Prince of Asturias (son of King Juan Carlos I of Spain)]
ROYAL WEDDING ANNIVERSARY
Prince Charles/Carlo of Bourbon-Two Sicilies, Duke of Calabria & Camilla Crociani {1998} (now known as the Duke & Duchess of Castro)
HISTORICAL ROYAL EVENT
475 Romulus Augustulus is proclaimed Western Roman Emperor.
HISTORICAL ROYAL BIRTHS
1345 King Fernando I of Portugal (d.1383)
1391 King Duarte "the Philosopher/the Eloquent" of Portugal (d.1438)
1424 King Wladyslaw III of Poland, King of Hungary, Dalmatia + Croatia, Supreme Prince of Lithuania, Lord & Heir of Pomerania + Ruthenia (d.1444)
1636 Ferdinand Maria, Elector of Bavaria, Duke of Bavaria, Prince-elector of the Holy Roman Empire (d.1679)
1705 Pope Clement XIV (d.1774)
1838 King Luis I of Portugal + the Algarves (d.1889)
1851 Queen consort Louise of Denmark, Princess of Sweden (d.1926)
DEATHS
1214 Princess Eleanor of England, Queen consort [as Leonor] of Castile
1448 John VIII Palaiologos, Emperor of the Byzantine Empire
1723 Cosimo III de' Medici, Grand Duke of Tuscany
1732 King Vittorio Amedeo II of Sardinia, Duke of Savoy
1733 Eberhard IV Ludwig, Duke of Wurttemberg
1765 Prince William Augustus of Great Britain, Duke of Cumberland