Fifty-five Christians are executed in Nagasaki during the Great Genna Martyrdom

Nagasaki , officially Nagasaki City , is the capital and the largest city of Nagasaki Prefecture on the island of Kyushu in Japan.

The Great Genna Martyrdom , also known as the Great Martyrdom of Nagasaki, was the execution of 55 foreign and domestic Catholics killed together at Nishizaka Hill in Nagasaki, Japan, on 10 September 1622. Beginning in 1614, Christianity was banned in Japan and a smuggling incident concerning two foreign missionaries prompted the killing. The mass execution was part of the persecution of Christians in Japan by Tokugawa Hidetada, the second Shogun of the Tokugawa shogunate.

September 10 is the 253rd day of the year in the Gregorian calendar; 112 days remain until the end of the year.