Question: The UN Security Council had its first session on what date?
About the article "United Kingdom", section "Abstract".

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United Nations Security Council Resolution 6, adopted unanimously on May 17, 1946, listed dates when the Security Council would review new applicants for the UN.
The resolution was amended on July 24 because of the postponement of the opening date of the second part of the first session of the General Assembly.
The dates in the original resolution were pushed back as many days as was the interval between the anticipated convening day and the actual one. 
"Abyad wa Aswad" received its license in 2002, being the first independent political weekly in Syria.
The magazine's first issue appeared on 22 July 2002.
The magazine, headquartered in Damascus, is a privately owned publication.
Bilal Turkmani, former defense minister Hasan Turkmani's son, is the owner of "Abyad wa Aswad".
The magazine adopts a critical attitude towards the activities of the Syrian government and contains reform-oriented articles.
For instance, the magazine criticized the Syrian foreign ministry in 2003 for not attending the special session of the UN Security Council during which UN Security Council resolution 1483 that was about ending the sanctions against Iraq had been voted.
It further argued that both the foreign ministry and other governmental bodies had no dynamism and flexibility. 
The United Nations Security Council (UNSC) is one of the principal organs of the United Nations and is charged with the maintenance of international peace and security.
Its powers, outlined in the United Nations Charter, include the establishment of peacekeeping operations, the establishment of international sanctions, and the authorization of military action.
Its powers are exercised through United Nations Security Council resolutions.
The Security Council held its first session on 17 January 1946 at Church House, Westminster, London.
Since its first meeting, the Council, which exists in continuous session, has travelled widely, holding meetings in many cities, such as Paris and Addis Ababa, as well as at its current permanent home at the United Nations Headquarters in New York City.
There are 15 members of the Security Council, consisting of five veto-wielding permanent members (China, France, Russia, the United Kingdom, and the United States) and 10 elected non-permanent members with two-year terms.
This basic structure is set out in Chapter V of the UN Charter.
Security Council members must always be present at UN headquarters in New York so that the Security Council can meet at any time.
This requirement of the United Nations Charter was adopted to address a weakness of the League of Nations since that organization was often unable to respond quickly to a crisis. 
On 14 July 1960, in response to requests by Prime Minister Lumumba, the UN Security Council adopted Resolution 143.
This called upon Belgium to remove its troops and for the UN to provide 'military assistance' to the Congolese forces to allow them 'to meet fully their tasks'.
Lumumba demanded that Belgium remove its troops immediately, threatening to seek help from the Soviet Union if they did not leave within two days.
The UN reacted quickly and established United Nations Operation in the Congo (ONUC).
The first UN troops arrived the next day but there was instant disagreement between Lumumba and the UN over the new force's mandate.
Because the Congolese army had been in disarray since the mutiny, Lumumba wanted to use the UN troops to subdue Katanga by force.
Referring to the resolution, Lumumba wrote to UN Secretary-General Dag Hammarskjöld, 'From these texts it is clear that, contrary to your personal interpretation, the UN force may be used to subdue the rebel government of Katanga.
'Secretary-General Hammarskjöld refused.
To Hammarskjöld, the secession of Katanga was an internal Congolese matter and the UN was forbidden to intervene by Article 2 of the United Nations Charter.
Disagreements over what the UN force could and could not do continued throughout its deployment, despite the passage of two further Security Council resolutions.
Passed on 22 July, Security Council Resolution 145 affirmed that Congo should be a unitary state and strengthened the call for Belgium to withdraw its forces.
On 9 August, Security Council Resolution 146 mentioned Katanga for the first time, and explicitly allowed UN forces to enter Katanga whilst forbidding their use to 'intervene in or influence the outcome of any internal conflict'. 
As the situation in Europe escalated into war, the Assembly transferred enough power to the Secretary General on 30 September 1938 and 14 December 1939 to allow the League to continue to exist legally and carry on reduced operations.
The headquarters of the League, the Palace of Nations, remained unoccupied for nearly six years until the Second World War ended.
At the 1943 Tehran Conference, the Allied powers agreed to create a new body to replace the League: the United Nations.
Many League bodies, such as the International Labour Organization, continued to function and eventually became affiliated with the UN.
The designers of the structures of the United Nations intended to make it more effective than the League.
The final meeting of the League of Nations took place on 12 April 1946 in Geneva.
Delegates from 34 nations attended the assembly.
This session concerned itself with liquidating the League: it transferred assets worth approximately US$22,000,000 in 1946, (including the Palace of Peace and the League's archives) to the UN, returned reserve funds to the nations that had supplied them, and settled the debts of the League.
Robert Cecil is said to have summed up the feeling of the gathering during a speech to the final assembly when he said:The motion that dissolved the League passed unanimously: "The League of Nations shall cease to exist except for the purpose of the liquidation of its affairs."
It also set the date for the end of the League as the day after the session closed.
On 19 April 1946, the President of the Assembly, Carl J. Hambro of Norway, declared "the twenty-first and last session of the General Assembly of the League of Nations closed".
The League of Nations ceased to exist the following day.
Professor David Kennedy portrays the League as a unique moment when international affairs were "institutionalized", as opposed to the pre–First World War methods of law and politics.
The principal Allies in the Second World War (the UK, the USSR, France, the US, and the Republic of China) became permanent members of the United Nations Security Council in 1946.
(In 1971 the People's Republic of China replaced the Republic of China (Taiwan) as permanent member of the UN Security Council, and in 1991 the Russian Federation replaced the USSR.)
Decisions of the Security Council are binding on all members of the UN; however, unanimous decisions are not required, unlike in the League Council.
Permanent members of the Security Council can wield a veto to protect their vital interests.
Like its predecessor, the United Nations does not have its own standing armed forces, but calls on its members to contribute to armed interventions, such as during the Korean War and for the peacekeeping mission in the former Yugoslavia.