Question: When did was the Armistice Agreement signed, ending the fighting in the Korean War?
About the article "Korean War", section "Armistice (July 1953 – November 1954)".

Candidate passages:
  World War I * Treaty of Brest-Litovsk, armistice between Russia and the Central Powers, March 1918 * Armistice with Bulgaria, also known as the Armistice of Solun, September 1918 * Armistice of Mudros Between the Ottoman Empire and the Allies, October 1918 * Austrian-Italian Armistice of Villa Giusti ended the war on the Italian front in early November 1918 * Armistice with Germany (Compiègne), ended World War I, November 11, 1918   Armistice of Mudanya between Turkey, Italy, France and Britain and later Greece, 1922  World War II * Armistice with France (Second Compiègne), 1940 * Armistice of Saint Jean d'Acre between British forces in the Middle East and Vichy France forces in Syria, 1941 * Armistice with Italy, 1943 * Moscow Armistice, signed by Finland and the Soviet Union on 19 September 1944 ending the Continuation War  1949 Armistice Agreements between Israel and its neighbors Egypt, Jordan, Lebanon and Syria  Korean War Armistice Agreement, July 1953  Geneva Agreements signed by France and the Viet Minh on 20 July 1954 ending the First Indochina War  1962 armistice in Algeria attempted to end the Algerian War Across 5 Aprils  
Under International Law an armistice is a legal agreement (often in a document) which ends fighting between the "belligerent parties" of a war or conflict.
The Hague II (1899) Treaty, says "If armistice's duration is not fixed," the parties can resume fighting (Article 36) as they choose, but with proper notifications.
This is in comparison to a "fixed duration" armistice, where the parties can renew fighting "only" at the "end" of the particular fixed duration.
When the belligerent parties say (in effect), "this armistice completely ends the fighting" without any end date for the armistice, then duration of the armistice is fixed in the sense that no resumption of the fighting is allowed at any time.
For example, the Korean Armistice Agreement calls for a "ceasefire and armistice" and has the "objective of establishing an armistice which will ensure a complete cessation of hostilities and of all acts of armed force in Korea until a final peaceful settlement is achieved..." 
The United Nations Command Military Armistice Commission (UNCMAC) was established in July 1953 at the end of the Korean War to supervise the Korean Armistice Agreement, and which has been operating ever since. 
On November 29, 1952, the newly U.S. president-elect Dwight D. Eisenhower, went to Korea to learn what might end the Korean War.
With the United Nations' acceptance of India's proposed Korean War armistice, the Korean People's Army (KPA), the People's Volunteer Army (PVA), and the UN Command ceased fire with the battle line approximately at the 38th parallel.
Upon agreeing to the ceasefire agreement, the belligerents established the Korean Demilitarized Zone (DMZ), which has since been patrolled by the KPA and the joint ROKA, US, and UN Command.
The Korean Demilitarized Zone runs northeast of the 38th parallel; to the south, it travels west.
The old Korean capital city of Kaesong, site of the armistice negotiations, originally lay in the pre-war ROK, but now is in the DPRK.
The United Nations Command (supported by the United States), the North Korean Korean People's Army, and the Chinese People's Volunteer Army, signed the Armistice Agreement on July 27, 1953, to end the fighting.
The Armistice also called upon the governments of South Korea, North Korea, China, and the United States to participate in continued peace talks.
For his part, ROK President Syngman Rhee attacked the peace proceedings.
The war is considered to have ended at this point, even though there was no peace treaty. 
On June 25, 1950, North Korean forces invaded South Korea ("see" Korean War).
Led by the U.S., a 16-member coalition undertook the first collective action under U.N. Command (UNC).
Oscillating battle lines inflicted a high number of civilian casualties and wrought immense destruction.
With the People's Republic of China's entry on behalf of North Korea in 1951, the fighting came to a stalemate close to the original line of demarcation.
Armistice negotiations, initiated in July 1951, finally concluded on July 27, 1953 at Panmunjeom, now in the Demilitarized Zone (DMZ).
The resulting Armistice Agreement was signed by the North Korean army, Chinese People's Volunteers and the U.S.-led and Republic of Korea-supported United Nations Command.
A peace treaty has not been signed up to now.
Following the armistice, the South Korean government returned to Seoul on the symbolic date of August 15, 1953.