Question: What year was the crossing that the Daily Mail Trans-Atlantic Air Race is commemorating?

full_context: Document 1: Charles Lindbergh: Charles Augustus Lindbergh (February 4, 1902 – August 26, 1974), nicknamed Slim, Lucky Lindy, and The Lone Eagle, was an American aviator, military officer, author, inventor, explorer, and environmental activist. At age 25 in 1927, he went from obscurity as a U.S. Air Mail pilot to instantaneous world fame by making his Orteig Prizewinning nonstop flight from Long Island, New York, to Paris. He covered the 33 ⁄ -hour, 3,600 smi alone in a single-engine purpose-built Ryan monoplane, "Spirit of St. Louis". This was the first solo transatlantic flight and the first non-stop flight between North America and mainland Europe. Lindbergh was an officer in the U.S. Army Air Corps Reserve, and he received the United States' highest military decoration, the Medal of Honor, for the feat.
Document 2: Daily Mail Circuit of Britain air race: The "Daily Mail" Circuit of Britain air race was a British cross-country air race which took place from 1911 until 1914, with prizes donated by the "Daily Mail" newspaper. It was one of several races and awards offered by the paper between 1906 and 1925.
Document 3: Charles Lindbergh: Charles Augustus Lindbergh (February 4, 1902 – August 26, 1974), nicknamed Slim, Lucky Lindy, and The Lone Eagle, was an American aviator, military officer, author, inventor, explorer, and environmental activist. At age 25 in 1927, he went from obscurity as a U.S. Air Mail pilot to instantaneous world fame by making his Orteig Prizewinning nonstop flight from Long Island, New York, to Paris. He covered the 33 ⁄ -hour, 3,600 smi alone in a single-engine purpose-built Ryan monoplane, "Spirit of St. Louis". This was the first solo transatlantic flight and the first non-stop flight between North America and mainland Europe. Lindbergh was an officer in the U.S. Army Air Corps Reserve, and he received the United States' highest military decoration, the Medal of Honor, for the feat.
Document 4: Charles Kingsford Smith: Sir Charles Edward Kingsford Smith MC, AFC (9 February 1897 – 8 November 1935), often called by his nickname "Smithy", was an early Australian aviator. In 1928, he earned global fame when he made the first trans-Pacific flight from the United States to Australia. He also made the first non-stop crossing of the Australian mainland, the first flights between Australia and New Zealand, and the first eastward Pacific crossing from Australia to the United States. He also made a flight from Australia to London, setting a new record of 10.5 days.
Document 5: No. 1 Long Range Flight RAAF: No. 1 Long Range Flight was a temporary Royal Australian Air Force unit formed to participate in the 1953 London-to-Christchurch air race (also known as the Christchurch Centenary air race). The flight was established in February 1953 and was equipped with three Canberra bombers, specially modified between June and August. Following extensive training, two Canberras departed for the UK in mid-September. The race began on 9 October, and one of the flight's aircraft placed second, with a total flying time of 22 hours and 29 minutes. The other aircraft was forced out of the race when one of its tyres burst while landing at Cocos Island to refuel, but completed its flight to Christchurch after being repaired. After a brief period in New Zealand both aircraft returned to Australia to be modified back to a standard configuration, and the flight was disbanded in November.
Document 6: Transatlantic flight of Alcock and Brown: British aviators John Alcock and Arthur Brown made the first non-stop transatlantic flight in June 1919. They flew a modified First World War Vickers Vimy bomber from St. John's, Newfoundland, to Clifden, Connemara, County Galway, Ireland. The Secretary of State for Air, Winston Churchill, presented them with the "Daily Mail" prize for the first crossing of the Atlantic Ocean by aeroplane in "less than 72 consecutive hours". A small amount of mail was carried on the flight, making it the first transatlantic airmail flight. The two aviators were awarded the honour of Knight Commander of the Most Excellent Order of the British Empire (KBE) a week later by King George V at Windsor Castle.
Document 7: Daily Mail aviation prizes: Between 1907 and 1925, the Daily Mail newspaper, initially on the initiative of its proprietor, Alfred Harmsworth, 1st Viscount Northcliffe, awarded numerous prizes for achievements in aviation. The newspaper would stipulate the amount of a prize for the first aviators to perform a particular task in aviation, or to the winner of an aviation race or event. The most famous prizes were the £1,000 for the first cross-channel flight awarded to Louis Blériot in 1909 and the £10,000 given in 1919 to Alcock and Brown for the first non-stop transatlantic flight between North America and Ireland.
Document 8: First aerial crossing of the South Atlantic: The first aerial crossing of the South Atlantic was made by the Portuguese naval aviators Gago Coutinho and Sacadura Cabral in 1922, to mark the centennial of Brazil's independence. Coutinho and Cabral flew in stages from Lisbon, Portugal, to Rio de Janeiro, Brazil, using three different Fairey III biplanes, and covered a distance of 8383 km between March 30 and June 17. Although the North Atlantic had already been traversed in a non-stop flight by John Alcock and Arthur Brown in 1919, Coutinho and Cabral's flight remains notable as a milestone in transatlantic aviation, and for its use of new technologies such as the artificial horizon.
Document 9: Artur de Sacadura Cabral: Artur de Sacadura Freire Cabral, GCTE (23 May 1881 – 15 November 1924), known simply as Sacadura Cabral (] ), was a Portuguese aviation pioneer who in 1922, together with Gago Coutinho (1869–1959), conducted the first flight across the South Atlantic Ocean, and also the first using astronomical navigation only, from Lisbon, Portugal, to Rio de Janeiro, Brazil. On 15 November 1924, he disappeared while flying over the English Channel, along with his co-pilot, Mechanical Corporal José Correia, due to fog and his shortening eyesight (which never kept him from flying). Although some float remains from his seaplane had been found four days later, the bodies were never found.
Document 10: 1949 BRDC International Trophy: The first BRDC International Trophy meeting, formally titled the Daily Express International Trophy, was held on 20 August 1949 at the Silverstone Circuit, England. It was the first race meeting to only use the former airfield's perimeter roadways, rather than the main runways. The event was held over two heats of 20 laps and one final of 30 laps of the Grand Prix circuit. The final was won by Italian Alberto Ascari, who would go on to win the World Championship of Drivers twice. In addition to the main Formula One-regulation competition, the meeting also contained events for 500 cc racing cars and production cars. The race meeting was attended by over 100,000 people, but was marred by the death of St. John Horsfall in an accident on the 13th lap of the final race.
Document 11: Virgin Atlantic GlobalFlyer: The Scaled Composites Model 311 Virgin Atlantic GlobalFlyer (registered N277SF) is an aircraft designed by Burt Rutan in which Steve Fossett flew a solo nonstop airplane flight around the world in 2 days 19 hours and 1 minute (67 hours 1 minute) from February 28 to March 3, 2005. The flight speed of 590.7 kph set the world record for the fastest nonstop non-refueled circumnavigation, beating the mark set by the previous Rutan-designed Voyager aircraft at 9 days 3 minutes and an average speed of 116 mph .
Document 12: Carlos Viegas Gago Coutinho: Carlos Viegas Gago Coutinho, GCTE, GCC, generally known simply as Gago Coutinho (] ; 17 February 1869 – 18 February 1959) was a Portuguese naval officer and aviation pioneer who, together with Sacadura Cabral (1881–1924), was the first to cross the South Atlantic Ocean by air, from March to June 1922 (some sources wrongly claim 1919), from Lisbon to Rio de Janeiro.
Document 13: Leslie Hamilton: Flying Officer Leslie Hamilton {'1': ", '2': ", '3': ", '4': "} , was a British World War I flying ace credited with six aerial victories. He disappeared while attempting the first non-stop east-west flight across the Atlantic Ocean. His Fokker F.VIIa, named "St. Raphael", was last seen in mid-Atlantic by SS "Josiah Macy", a Standard Oil ship.
Document 14: Daily Mail Trans-Atlantic Air Race: The Daily Mail Trans-Atlantic Air Race was a race between London and New York City to commemorate the 50th Anniversary of the first trans-atlantic crossing by John Alcock and Arthur Brown.
Document 15: Beryl Markham: Beryl Markham (née Clutterbuck, 26 October 1902 – 3 August 1986) was a British-born Kenyan aviator (one of the first bush pilots), adventurer, racehorse trainer and author. She was the first woman to fly solo across the Atlantic from east to west. She wrote about her adventures in her memoir, "West with the Night".
ground_truth: 1919