Historical Events on September 21

18 significant historical events occurred on September 21. September 21 has seen various events across decades and places. On this date, the 1997 Austrian Grand Prix motor race took place, the 1999 Jiji earthquake hit Chi-chi, Nantou in Taiwan, and the 2013 Westgate shopping mall terrorist attack occurred in Nairobi, Kenya. These happenings include sports, natural disasters, and acts of terrorism, showing the range of historical incidents associated with this day.