In July 1971, the Apollo 16 astronauts visited Greater Sudbury, Ontario, Canada for geology training exercises, the first time U. S. astronauts ever did so.

Agent Orange is the combination of the code names for Herbicide Orange ( HO ) and Agent LNX, one of the herbicides and defoliants used by the U. S. military as part of its herbicidal warfare program, Operation Ranch Hand, during the Vietnam War from 1961 to 1971.

Map showing locations of U. S. army aerial herbicide spray missions in South Vietnam taking place from 1965 to 1971

* 1971 – Ping Pong Diplomacy: In an attempt to thaw relations with the United States, the People's Republic of China hosts the U. S. table tennis team for a weeklong visit.

Late in 1971, BJU filed suit to prevent the IRS from taking its tax exemption, but in 1974, in Bob Jones University v. Simon, the U. S. Supreme Court ruled that the university did not have standing to sue until the IRS actually assessed taxes.

* Bella Abzug ( 1942 ), Feminist ; political activist ; U. S. Representative, 1971 – 1977

Their second son, John Sheldon Doud Eisenhower, was born on August 3, 1922, while they were in Panama ; John served in the United States Army, retired as a brigadier general, became an author and served as U. S. Ambassador to Belgium from 1969 to 1971.

* O ' Hara, U. S. Treasury ( 1971 – 72 ), and

* O ' Hara, U. S. Treasury ( 1971 )

* O ' Hara, U. S. Treasury ( 22 episodes, 1971 – 1972 )

In response to an EDF suit, the U. S. District Court of Appeals in 1971 ordered the EPA to begin the de-registration procedure for DDT.

The show was broadcast from 1948 to 1971 ( a total of 23 years ), which made it one of the longest-running variety shows in U. S. broadcast history.

* 1971 – U. N. Secretary General U Thant signs United Nations proclamation of the vernal equinox as Earth Day.

* 1886 – Hugo Black, U. S. Supreme Court Justice ( d. 1971 )

In the fall of 1971 the ship sailed towards Amchitka and faced the U. S. Coast Guard ship Confidence which forced the activists to turn back.

He accompanied the Rolling Stones on their 1971 U. K. tour in the hope of being signed to the newly formed Rolling Stones Records, intending to record a duo album with Richards.

Its 21 years in TV syndication ( 1971 – 1992 ) was the record for a U. S. program, until Soul Train surpassed it in 1993.

However, in the case of Griggs v. Duke Power Co. in 1971, for the purpose of minimizing employment practices that disparately impacted racial minorities, the U. S. Supreme Court banned the use of IQ tests in employment, except when linked to job performance via a Job analysis.

The Bretton Woods system prevailed until 1971, when the U. S. government suspended the convertibility of the dollar ( and dollar reserves held by other governments ) into gold.

* 1971 – The Alcohol, Tobacco, and Firearms Division of the U. S. Internal Revenue Service raids the home of Ken Ballew for illegal possession of hand grenades, which all turn out to be inert or dummies.

* 1971 – President Richard Nixon declares the U. S. War on Drugs.

* 1971 – Ohio ratifies the 26th Amendment to the U. S. Constitution, reducing the voting age to 18, thereby putting the amendment into effect.

The second director ( 1960 to 1971 ) was Nicholas U. Mayall.

The U. S. Apollo program | Apollo Lunar Roving Vehicle from Apollo 15 on the moon in 1971

UTC is a discontinuous time scale composed from segments that are linear transformations of atomic time, the discontinuities being arranged so that UTC approximated UT2 until the end of 1971, and UT1 thereafter.

Angola-Vietnam relations were established in August 1971, four years before Angola gained its independence, when future President of Angola Agostinho Neto visited Vietnam.

Garden City, NY: Doubleday, 1971..

Roy Andrew Miller's 1971 book Japanese and the Other Altaic Languages convinced most Altaicists that Japanese also belonged to Altaic.

It is followed by the Nihon shoki, completed in 720, and that by the Man ' yōshū, which dates from c. 771-785, but includes material that is about 400 years earlier ( Miller 1971: 4 ).

He bemoaned the fact that the book had been taken as the source material for a 1971 film that was perceived to glorify sex and violence.

# The Anglican Consultative Council ( first met in 1971 ) was created by a 1968 Lambeth Conference resolution, and meets usually at three year intervals.

In 1971 Agatha Christie was made a Dame Commander of the Most Excellent Order of the British Empire.

* 1971 – An attempted coup fails in the African nation of Chad.

* 1882 – Ernst Eklund, Swedish actor ( d. 1971 )

* 1886 – Edward Ballantine, American composer ( d. 1971 )

He had a peak Elo rating of 2780, and his 90 total months at world number one is second all-time behind only Garry Kasparov since the inception of the FIDE ranking list in 1971.

He won the 1971 Alekhine Memorial in Moscow ( equal with Leonid Stein ), ahead of a star-studded field, for his first significant adult victory.

His Elo rating shot from 2540 in 1971 to 2660 in 1973, when he shared second in the USSR Chess Championship, and finished equal first with Viktor Korchnoi in the Leningrad Interzonal Tournament, with the latter success qualifying him for the 1974 Candidates Matches, which would determine the challenger of the reigning world champion, Bobby Fischer.

* 1971 – The Troubles: The British security forces in Northern Ireland launch Operation Demetrius.

* 1971 – James Kim, American journalist and technology expert ( d. 2006 )

* 1943 – Michael Willetts, English soldier, George Cross recipient ( d. 1971 )

* 1890 – Marin Sais, American actress ( d. 1971 )

* 1891 – Viktor Zhirmunsky, Russian historian and linguist ( d. 1971 )

* 1902 – Pope Cyril VI of Alexandria ( d. 1971 )

Architects in the UK who have made contributions to the profession through design excellence or architectural education, or have in some other way advanced the profession, might until 1971 be elected Fellows of the Royal Institute of British Architects and can write FRIBA after their name if they feel so inclined.

Those elected to chartered membership of the RIBA after 1971 may use the initials RIBA but cannot use the old ARIBA and FRIBA.

* 1909 – Walter Van Tilburg Clark, American novelist ( d. 1971 )

* 1920 – Charlie Shavers, American trumpet player ( d. 1971 )