2006 North Korean Nuclear Test Graphic showing seismic activity at the time of the test Information Country North Korea Test site Punggye - ri Nuclear Test Site, Kilju County. Period 10: 35: 28 KST, October 9, 2006 Number of tests Test type Unknown Device type Fission Max. yield 0.48 kilotons of TNT (2.0 TJ) (Chinese academics) 0.55 -- 12 kilotons of TNT (2.3 -- 50.2 TJ) (Jane 's Defence Weekly & South Korean estimates, but raised doubts on the lower end estimates because it does not correspond with the 4.2 Richter scale) 5 -- 15 kilotons of TNT (21 -- 63 TJ) 0.7 -- 2 kilotons of TNT (2.9 -- 8.4 TJ) (Estimations from Federal Institute for Geosciences and Natural Resources) Test chronology ← None 2009 test →
when did north korea set off its first nuclear bomb
10: 35: 28 KST, October 9, 2006