Historical Events on June 15

25 significant historical events occurred on June 15. June 15 has seen several important historical events over the centuries. On this date in 1826, the Ottoman Janissary Corps was disbanded during the Auspicious Incident. In 1846, the Oregon Treaty was signed by Britain and the United States to establish territorial boundaries. In 1990, the Dublin Convention was adopted to address political asylum procedures in the European Union. The date also includes two milestones in Formula One racing: the 1958 Belgian Grand Prix and the 1986 Canadian Grand Prix.