Nuclear Weapons Timeline By transter Jul 16, 1945 The First Nuclear Test Aug 6, 1945 Hiroshima Nuclear Bombing Aug 9, 1945 Nagasaki Nuclear Bombing Mar 5, 1970 Nuclear Non-Proliferation Treaty is Signed Jan 3, 1993 Start II is signed Dec 5, 1994 Start I is Signed Sep 10, 1996 CTBT was Signed Oct 16, 2006 North Korea Tests their first Nuclear Weapon Apr 6, 2010 President Obama Announces New Nuclear Strategy Apr 8, 2010 New Start is Signed
