Fatto matematico: 8512 is the number of non-intersecting rook paths joining opposite corners of a 5×5 chessboard.
Trivia: 8512 is a boring number.
Data storica: April 21st is the day in 1863 that Bahá'u'lláh, the founder of the Bahá'í Faith, declares his mission as "He whom God shall make manifest".