Hecho general: 1191 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 1191 is the number of symmetric plane partitions of 25.
Trivia: 1191 is a boring number.
Fecha histórica: April 5th is the day in 1992 that the Siege of Sarajevo begins when Serb paramilitaries murder peace protesters Suada Dilberovic and Olga Sučić on the Vrbanja Bridge.