paragraph_text: The May Days of 1937, sometimes also called May Events, refer to a series of clashes between 3 and 8 May 1937 were a period of civil violence in Catalonia, when factions on the Republican side of the Spanish Civil War engaged each other in street battles in various parts of Catalonia, and centered on the city of Barcelona, in the context of the Spanish Civil War.

paragraph_text: The Day was first celebrated in 1995 in the United Kingdom. The original, global World Book Day event is generally observed on 23 April - it was changed in the UK to avoid clashes with Easter school holidays and with St George's Day. Conversely, a separate event World Book Night organized by independent charity The Reading Agency is held on 23 April.

paragraph_text: Samsung Galaxy Grand Prime Plus is an Android smartphone produced by Samsung Electronics. It was unveiled and released in November 2016. It has an advanced 64 - bit class system on a chip (SoC) backed by 1.5 GB RAM.

paragraph_text: The kingdoms of Kapisa - Gandhara in modern - day Afghanistan, Zabulistan and Sindh (which then held Makran) in modern - day Pakistan, all of which were culturally and politically part of India since ancient times, were known as ``The Frontier of Al Hind ''. The first clash between a ruler of an Indian kingdom and the Arabs took place in 643 AD, when Arab forces defeated Rutbil, King of Zabulistan in Sistan. Arabs led by Suhail b. Abdi and Hakam al Taghilbi defeated an Indian army in the Battle of Rasil in 644 AD at the Indian Ocean sea coast, then reached the Indus River. Caliph Umar ibn Al - Khattab denied them permission to cross the river or operate on Indian soil and the Arabs returned home.

paragraph_text: Count Lasher entered some of the music competitions held regularly at Jamaica's Ward's Theatre. On 20 April 1957 the theatre's "Federated Calypso Clash" saw Trinidadian calypso artists Lord Pretender and Lord Melody battle mento locals Count Lasher and Lord Messam.

paragraph_text: A Morning (formerly New Day, Breakfast at The New RO in the case of Ottawa, and A-Channel Morning) is a morning television show that formerly aired on Canada's CHRO-TV in Ottawa and the other stations in the A system (except for A Atlantic).

paragraph_text: The New York City Subway is a rapid transit system owned by the City of New York and leased to the New York City Transit Authority, a subsidiary agency of the state - run Metropolitan Transportation Authority (MTA). Opened in 1904, the New York City Subway is one of the world's oldest public transit systems, one of the world's most used metro systems, and the metro system with the most stations. It offers service 24 hours per day on every day of the year, though some routes may operate only part - time.

paragraph_text: The Wall Street Journal is an American business - focused, English - language international daily newspaper based in New York City. The Journal, along with its Asian and European editions, is published six days a week by Dow Jones & Company, a division of News Corp. The newspaper is published in the broadsheet format and online.

paragraph_text: The Battle of the Hellespont, consisting of two separate naval clashes, was fought in 324 between a Constantinian fleet, led by the eldest son of Constantine I, Crispus; and a larger fleet under Licinius' admiral, Abantus (or Amandus). Despite being outnumbered, Crispus won a very complete victory.

paragraph_text: PL-01 is a Polish light tank mockup created by OBRUM with support from BAE Systems, based on the Swedish CV90120-T light tank. The concept vehicle was first unveiled at the International Defence Industry Exhibition in Kielce on 2 September 2013.

paragraph_text: In 121 BC, Rome came into contact with two Celtic tribes (from a region in modern France), both of which they defeated with apparent ease. The Cimbrian War (113–101 BC) was a far more serious affair than the earlier clashes of 121 BC. The Germanic tribes of the Cimbri and the Teutons migrated from northern Europe into Rome's northern territories, and clashed with Rome and her allies. At the Battle of Aquae Sextiae and the Battle of Vercellae both tribes were virtually annihilated, which ended the threat.

paragraph_text: The Battle of Carlisle was an American Civil War skirmish fought in Pennsylvania on the same day as the Battle of Gettysburg, First Day. Stuart's Confederate cavalry briefly engaged Union militia under Maj. Gen. William F. "Baldy" Smith at Carlisle and set fire to the Carlisle Barracks. Stuart's cavalry withdrew and arrived at the Battle of Gettysburg, Second Day, to the annoyance and concern of Gen. Robert E. Lee.

paragraph_text: The Volkswagen Taigun is a new subcompact crossover SUV, which was to be unveiled by the Volkswagen Group for the model year of 2016.

paragraph_text: Samsung Galaxy Alpha is an Android smartphone produced by Samsung Electronics. Unveiled on 13 August 2014, the device was released in September 2014. A high - end device, the Galaxy Alpha is Samsung's first smartphone to incorporate a metallic frame, although the remainder of its physical appearance still resembles previous models such as the Galaxy S5. It also incorporates Samsung's new Exynos 5430 system - on - chip, which is the first mobile system - on - chip to use a 20 nanometer manufacturing process.

paragraph_text: Publishers from different factions of the Latter Day Saint movement have published different chapter and verse notation systems. The two most significant are the LDS system, introduced in 1879, and the RLDS system, which is based on the original 1830 chapter divisions.

paragraph_text: A struggle for succession in the mid-twelfth century gave the Fujiwara an opportunity to regain their former power. Fujiwara no Yorinaga sided with the retired emperor in a violent battle in 1156 against the heir apparent, who was supported by the Taira and Minamoto (Hōgen Rebellion). In the end, the Fujiwara were destroyed, the old system of government supplanted, and the insei system left powerless as bushi took control of court affairs, marking a turning point in Japanese history. In 1159, the Taira and Minamoto clashed (Heiji Rebellion), and a twenty-year period of Taira ascendancy began.

paragraph_text: The Battle of Gang Toi (8 November 1965) was fought during the Vietnam War between Australian troops and the Viet Cong. The battle was one of the first engagements between the two forces during the war and occurred when A Company, 1st Battalion, Royal Australian Regiment (1 RAR) struck a Viet Cong bunker system defended by Company 238 in the Gang Toi Hills, in northern Bien Hoa Province. It occurred during a major joint US-Australian operation codenamed Operation Hump, involving the US 173rd Airborne Brigade, to which 1 RAR was attached. During the latter part of the operation an Australian rifle company clashed with an entrenched company-sized Viet Cong force in well-prepared defensive positions. Meanwhile, an American paratroop battalion was also heavily engaged in fighting on the other side of the Song Dong Nai.

paragraph_text: At June 1985's Consumer Electronics Show (CES), Nintendo unveiled the American version of its Famicom. This is the system which would eventually be officially deployed as the Nintendo Entertainment System, or the colloquial "NES". Nintendo seeded these first systems to limited American test markets starting in New York City on October 18, 1985, following up with a full-fledged North American release of the console in February of the following year. Nintendo released 17 launch titles: 10-Yard Fight, Baseball, Clu Clu Land, Duck Hunt, Excitebike, Golf, Gyromite, Hogan’s Alley, Ice Climber, Kung Fu, Pinball, Soccer, Stack-Up, Tennis, Wild Gunman, Wrecking Crew, and Super Mario Bros.h[›] Some varieties of these launch games contained Famicom chips with an adapter inside the cartridge so they would play on North American consoles, which is why the title screen of Gyromite has the Famicom title "Robot Gyro" and the title screen of Stack-Up has the Famicom title "Robot Block".

paragraph_text: The Battle of Hannut was a Second World War battle fought during the Battle of Belgium which took place between 12 and 14 May 1940 at Hannut in Belgium. It was the largest tank battle in the campaign. It was also the largest clash of tanks in armoured warfare history at the time.

paragraph_text: Battle Clash is a mecha-themed light gun shooting game produced by Nintendo and Intelligent Systems and released for the Super Nintendo Entertainment System in 1992. The game supports the Super Nintendo's light gun, the Super Scope. It was followed by "" during the following year.

Question: On what date did the publisher of Battle Clash unveil its new systems?
Answer: October 18, 1985