Question: The airline alliance joined by Saudia in May 2012 was founded in what month?

The AirClub is a 2012 founded airline alliance of seven airlines.  It is considered to be the first and only airline alliance of business airlines, in the world.  The alliance has a fleet of over 100 aircraft and is headquartered in Geneva, Switzerland. <SEP> Saudia (Arabic: السعودية‎ ‎ "as-Suʿūdiyyah "), also known as Saudi Arabian Airlines (الخطوط الجوية العربية السعودية), is the national carrier airline of Saudi Arabia, based in Jeddah.  The airline's main operational base is at King Abdulaziz International Airport in Jeddah.  Saudia is a member of the Arab Air Carriers Organization and joined the SkyTeam airline alliance on 29 May 2012.  King Khalid International Airport in Riyadh and King Fahd International Airport in Dammam are secondary hubs.  The new Dammam airport was opened for commercial use on 28 November 1999.  Dhahran International Airport in use until then, has reverted to being used as a military base.  The airline is the third largest in the Middle East in terms of revenue, behind Emirates and Qatar Airways.  It operates domestic and international scheduled flights to over 120 destinations in the Middle East, Africa, Asia, Europe and North America.  Domestic and international charter flights are operated, mostly during the Ramadan and the Hajj season. <SEP> Kingfisher Airlines was established in 2003.  It is owned by the Bengaluru based United Breweries Group.  The airline started commercial operations on 9 May 2005 with a fleet of four new Airbus A320-200s operating a flight from Mumbai to Delhi.  It started its international operations on 3 September 2008 by connecting Bengaluru with London.  Kingfisher's head office is located in Kingfisher House Western Express Highway Vile Parle (E) Mumbai – 400099 India and its registered office is located in UB City, Bangalore.  Its head office was previously in the Kingfisher House in Vile Parle (East), Mumbai.  In 2012 Vijay Mallya was trying to sell the Vile Parle Kingfisher House.  The airline had shut down its operations when on 20 October 2012 the DGCA suspended its flying license.  This suspension had been due to failure to give an effective response to the show-cause notice issued by DGCA.  However, The airline had locked out its employees for several days before this suspension.  On 25 October 2012, the employees agreed to return to work.  On 7 June 2010 Kingfisher became a member elect of the Oneworld airline alliance when it signed a formal membership agreement.  Kingfisher confirmed on 20 December 2011 that it will join the Oneworld airline alliance on 10 February 2012.  Kingfisher would have been the first Indian carrier to join one of the big airline alliances.  However, on 3 February 2012, owing to bad financial situation and two days after the International Air Transport Association (IATA) clearing house suspended Kingfisher Airlines; the airlines participation to Oneworld has been put on hold. <SEP>  Founded in June 2000, SkyTeam was the last of the three major airline alliances to be formed, the first two being Star Alliance and Oneworld.  s of 2014 , SkyTeam consists of 20 carriers from five continents and operates with the slogan "Caring more about you".  It also operates a cargo alliance named SkyTeam Cargo, which partners ten carriers, all of them SkyTeam members. SkyTeam is an airline alliance.  Its centralised management team, "SkyTeam Central", is based at the World Trade Center Schiphol Airport on the grounds of Amsterdam Airport Schiphol in Haarlemmermeer, Netherlands.