The People’s Republic of China conducts a nuclear weapons test under the nondescript code name Test No. 6, which is in fact China’s first thermonuclear (hydrogen) bomb test. Dropped by an aircraft, Test No. 6 has a yield of 3.3 megatons. For context, China had conducted its first nuclear test barely three years earlier.
theLogBook.com
https://www.theLogBook.com
Earl Green is the creator, curator, and head writer of theLogBook.com.
Also of interest...
Syncom 3
August 19, 1964
NOAA
October 3, 1970
Project SCORE: first communication satellite
December 18, 1958