Question: When was the flag carrier of Hong Kong founded?

Context paragraphs:
Cathay Dragon: Hong Kong Dragon Airlines Ltd (Chinese: 港龍航空公司), operating brand as Cathay Dragon (Chinese: 國泰港龍航空) and previously as Dragonair, is a Hong Kong-based international regional airline, with its corporate headquarters, Cathay Dragon House, and main hub at Hong Kong International Airport.  As of 30 October 2013, the airline operates a scheduled passenger network to 44 destinations in 13 countries and territories across Asia.  Additionally, the airline has 3 codeshares on routes which are served by partner airlines.  It has an all Airbus fleet of 41 aircraft, consisting of A320s, A321s and A330s. Cathay Dragon is a wholly owned subsidiary of Hong Kong's flag carrier, Cathay Pacific, and is an affiliate member of the Oneworld airline alliance.  The airline was founded on May 24, 1985 by Chao Kuang Piu, the airline's present honorary chairman.  Its maiden flight departed Hong Kong for Kota Kinabalu, Malaysia after being granted an air operator's certificate (AOC) by the Hong Kong Government in July 1985.  In 2010, Dragonair, together with its parent, Cathay Pacific, operated over 138,000 flights, carried nearly 27 million passengers and over 1.80 billion kg of cargo and mail.

Youngspiration: Youngspiration () is a localist political party in Hong Kong founded in 2015.  It emerged after the 2014 Hong Kong protests (often dubbed as the "Umbrella Revolution") with an agenda of protection of Hong Kong people's interests and culture against the interference of the Chinese government and advocated the "Hong Kong nation's right to self-determination".  The group wants a self-determination referendum in 2020 with the results effective in 2047, when China's "one country, two systems" promise ends.  As of 2016, the convenor of the group is Baggio Leung.

United Democrats of Hong Kong: The United Democrats of Hong Kong (; UDHK) was a short-lived political party in Hong Kong founded in 1990 as the united front of the liberal democracy forces in preparation of the 1991 first ever direct election for the Legislative Council of Hong Kong.  It self-proclaimed as the first political party in Hong Kong.  The party won a landslide victory by sweeping 12 of the 18 directly elected seats in the 1991 LegCo elections which shook the political landscape of Hong Kong.  In 1994 it was merged with another pro-democracy party Meeting Point to form the contemporary Democratic Party.

St. Paul's Convent School: St. Paul's Convent School (SPCS, ) is a private Catholic girls' school in Hong Kong founded by the Sisters of St. Paul de Chartres from France in 1854.  The school was formerly called French Convent School and was renamed St. Paul's Convent School in 1955.  SPCS counts a total of 15 winners of the Hong Kong Outstanding Students Awards, ranking fourth among all secondary schools in Hong Kong.  Revered as one of the top schools in Hong Kong, St Paul's Convent School has an impressive track record of strong public examination results and student acceptances to top universities all over the world.  The school boasts a long list of distinguished alumni in fields of politics, education, entertainment, communications and business.

Flag of Hong Kong: The flag of Hong Kong features a white, stylised, five-petal Hong Kong orchid tree ("Bauhinia blakeana") flower in the centre of a red field.  Its design was adopted on 4 April 1990 at the Third Session of the Seventh National People's Congress.  The precise use of the flag is regulated by laws passed by the 58th executive meeting of the State Council held in Beijing.  The design of the flag is enshrined in Hong Kong's Basic Law, the territory's constitutional document, and regulations regarding the use, prohibition of use, desecration, and manufacture of the flag are stated in the Regional Flag and Regional Emblem Ordinance.  The flag of Hong Kong was first officially hoisted on 1 July 1997, in the handover ceremony marking the transfer of sovereignty.

Hong Kong Citizen Forum: The Hong Kong Citizen Forum () was a short-lived pro-Beijing political organisation in Hong Kong founded in 1991.  Led by Gary Cheng Kai-nam.  a school teacher from a traditional leftist school, the organisation was formed on 20 April 1991 in the background of the first direct election for the Legislative Council of Hong Kong in September.

Hong Kong Buddhist Association: Hong Kong Buddhist Association () is a Buddhist organisation in Hong Kong founded in 1945.  It promotes Buddhism in Hong Kong and provides a series of charity services in Hong Kong, including education, medical, child care, youth activities, elderly care and burial.

Cathay Pacific: Cathay Pacific () () is the flag carrier of Hong Kong, with its head office and main hub located at Hong Kong International Airport.  The airline's operations and subsidiaries have scheduled passenger and cargo services to 180 destinations in 44 countries worldwide including codeshares and joint ventures.  Cathay Pacific operates a fleet of wide-body aircraft, consisting of Airbus A330, Airbus A350, and Boeing 777 equipment.  Its wholly owned subsidiary, Cathay Dragon, operates to 44 destinations in the Asia-Pacific region from its Hong Kong base.  In 2010, Cathay Pacific, together with Dragonair (rebranded Cathay Dragon), carried nearly 27 million passengers and over 1.8 million tons of cargo and mail.

Tuen Mun Government Secondary School: Tuen Mun Government Secondary School (TMGSS/TMS, ) is a secondary school in Tuen Mun, Hong Kong founded by the Hong Kong Government]].  Located at Castle Peak Road near Castle Peak Bay, the school offers classes and uses English as the medium of instruction.  It was founded in 1982 and was the first government school in Tuen Mun.  Tuen Mun Government Primary School is a feeder school to TMGSS.  Hong Kong Christian Service Pui Oi School and Shenzhen Futian Middle School are partner schools of TMGSS.

Flag of Hong Kong (1959–1997): The Flag of Hong Kong between 1959 and 1997 was a Blue Ensign with the coat of arms of Hong Kong on a white disk.  In Hong Kong, it is also nicknamed the Hong Kong flag (Chinese: 香港旗) or the Dragon and Lion flag (Chinese: 龍獅旗).  In 1959, following a grant from the College of Arms and with the consent of Queen Elizabeth II, it was adopted as the flag of British Hong Kong.  While the flag lost its official status following 1 July 1997 transfer of sovereignty over Hong Kong, it resurfaced in the 2010s as a symbol of protest against Chinese intervention in Hong Kong.

Supporting paragraphs: Cathay Pacific Cathay Dragon
Answer: May 24, 1985