May 22 - Apollo program: Apollo 10's lunar module flies within 15,400 m of the moon's surface
May 26 - Apollo program: Apollo 10 returns to earth after a successful eight-day test of all the components needed for the upcoming first manned moon landing
June 2 - In Ottawa, Canada the National Arts Center opens its doors to the public for the first time.
July 14 - Football War - after Honduras lost a soccer game against El Salvador, rioting broke out in Honduras against Salvadoran migrant workers. Of the 300,000 Salvadorean workers in Honduras, tens of thousands were expelled, prompting a brief Salvadoran invasion of Honduras. The OAS worked out a cease-fire on July 18, taking effect on July 20
August 4 - Vietnam War: At the apartment of French intermediary Jean Sainteny in Paris, US representative Henry Kissinger and North Vietnamese representative Xuan Thuy begin secret peace negotiations. The negotiations will eventually fail
August 12 - Jack Lynch, Taoiseach of the Republic of Ireland, makes a speech to the nation in which he asks the British Government to deploy a UN Peace-Keeping mission in Northern Ireland.
November 3 - Vietnam War: US President Richard M. Nixon addresses his nation on television and radio asking the "silent majority" to join him in solidarity on the Vietnam War effort and to support his policies
