Title: Tim Hortons
Content:  Initially, the US stores were the result of natural expansion in Canada–U.S. border areas (e.g., stores in Maine and the Buffalo, New York, area where Horton played from 1972 to 1974 as a member of the Buffalo Sabres). The first United States locations were opened in Deerfield Beach, Florida, and Pompano Beach, Florida, in 1981, but they proved unsuccessful and were closed. In 1985, the chain returned to the US with a location on Niagara Falls Boulevard in the Buffalo suburb of Tonawanda, New York. Starting in the mid-1990s, however, the chain began expanding in the US by acquiring former locations from fast-food chains. In 1996 and 
Title: Tim Hortons
Content:  Hortons announced a plan to add 82 locations in Tops Markets stores in the United States. On July 13, 2009, Tim Hortons opened stores in New York City at former Dunkin' Donuts locations operated by the Riese Organization. One of the stores is located at Madison Square Garden, where Horton played as a member of the New York Rangers from 1969 to 1971. In November 2010, Tim Hortons announced it was closing 36 stores in the northeastern United States due to high competition with New England-based Dunkin' Donuts and Au Bon Pain. The stores, which made less than half the average company per-store sales, were concentrated heavily 
Title: Tim Hortons
Content:  The chain's first store opened on May 17, 1964, in Hamilton, Ontario, under the name "Tim Horton Donuts"; the name was later abbreviated to "Tim Horton's" and then changed to "Tim Hortons" without the possessive apostrophe. The business was founded by Tim Horton, who played in the National Hockey League, from 1949 until his death in an auto crash in 1974. Horton had an initial venture in hamburger restaurants. Soon after Horton opened the store, he met Ron Joyce, a former Hamilton police constable. In 1965, Joyce took over the fledgling Tim Horton Donut Shop at 65 Ottawa St N. By 1967, after opening two additional stores, Joyce and Horton became full partners. Upon Horton's death, in an automobile crash in 
Title: Tim Hortons
Content:  stand would be open to the public from 9:00 to 15:00, seven days a week. This location is the first Tim Hortons in Arizona. A flagship Tim Hortons location within the Buffalo area opened across from the KeyBank Center (then First Niagara Center) at the LECOM Harborcenter complex on October 29, 2014. In 2016, Tim Hortons expanded to Minnesota with a store inside Mall of America. However, this location is now closed. In 2017, the chain announced an expansion to Northeast Ohio with 105 stores to come to the greater Cleveland area. The first of these opened in the Ellet neighborhood of Akron in July 2019.
Title: Tim Hortons
Content:  return to the market in the spring of 2019 with the opening of two locations, one in Youngstown and one in Girard, though both would suddenly close within weeks of each other by the end of the year. As of 2012 the company had expanded across the US states of Connecticut, Indiana, Kentucky, Maine, Massachusetts, Michigan, New York, Ohio, Pennsylvania, Rhode Island, and West Virginia. On January 7, 2014, Tim Hortons opened a kiosk in the Gila River Arena (where the Arizona Coyotes of the NHL play) in Glendale, Arizona. On March 5, 2014, The Arizona Coyotes announced that as of March 10, 2014, the Tim 
Title: Tim Horton
Content:   In 1964, Horton opened his first Tim Horton Doughnut Shop in Hamilton, Ontario on Ottawa Street. He added a few of his culinary creations to the initial menu. By 1968, Tim Horton had become a multi-million dollar franchise system. Horton's previous business ventures included both a hamburger restaurant and Studebaker auto dealership in Toronto. Upon Horton's death in 1974, his business partner Ron Joyce bought out the Horton family's shares for $1 million and took over as sole owner of the existing chain, which had 40 stores at the time, and later expanded to nearly 4,600 stores in Canada alone by 2013. Today, Tim Hortons is a flagship of Restaurant Brands International, a conglomerate that includes Burger King and Popeyes Louisiana Kitchen. Restaurant Brands International is majority-owned by Brazilian investment firm 3G Capital. Joyce's son, Ron Joyce Jr., is married to Horton's eldest daughter, Jeri-Lynn Horton-Joyce; the couple own Tim Hortons franchises in Cobourg, Ontario.
Title: Tim Hortons
Content:  Tim Hortons Inc. is a Canadian multinational fast food restaurant chain. Based in Toronto, Tim Hortons serves coffee, doughnuts, and other fast food items. It is Canada's largest quick-service restaurant chain, with 4,846 restaurants in 14 countries as of December 31, 2018. The company was founded in 1964 in Hamilton, Ontario, by Canadian hockey player Tim Horton and Jim Charade, after an initial venture in hamburger restaurants. In 1967, Horton partnered with investor Ron Joyce, who assumed control over operations after Horton died in 1974. Joyce expanded the chain into a multi-billion dollar franchise. Charade left the organization in 1966 and briefly returned in 1970 and 1993 through 1996. On August 26, 2014, Burger King agreed to purchase Tim Hortons for US$11.4 billion. The chain became a subsidiary of the Canadian holding company Restaurant Brands International, which is majority-owned by Brazilian investment firm 3G Capital, on December 15, 2014.
Title: Tim Hortons
Content:  NHL cities Horton played in (Buffalo, New York City, Toronto, and Pittsburgh), Pittsburgh was the only one without a Tim Hortons location, and was also where Horton met his future wife, Lori. 2011 saw Tim Hortons aggressively expanding into the Grand Rapids, Michigan, region. In 2012, Tim Hortons began advertising in the Youngstown, Ohio area in anticipation of an eventual expansion into the Mahoning Valley. The closest location at the time was in Calcutta, Ohio, about 50 miles south of Youngstown. The chain entered the area in July 2012 with the opening of a location in Hermitage, Pennsylvania. This location has since closed, but Tim Hortons 
Title: Tim Hortons
Content:  Tim Hortons' products have been available in Ireland and the United Kingdom at some Spar convenience stores since 2006 and Tesco supermarkets. Tim Hortons' other international expansions include a small outlet at the Dublin Zoo. Tim Hortons coffee and doughnuts were being sold at small self-service counters in 50 Spar stores in the UK and Ireland as of April 30, 2007. In 2016, Tim Hortons announced that they would be opening stores in the United Kingdom starting in 2017. Glasgow saw the first UK store open its doors on June 2, 2017, with a further store opening in Bishopbriggs in November 2017. In November 2017, two stores in Cardiff opened, as well as a store opening in Dunfermline. In December 2017, two further stores were opened 
Title: Tim Hortons
Content:  Trafford in the towns of Sale and Altrincham. On December 20, 2017, the chain opened a store in the Golden Square Shopping Centre in Warrington. Tim Hortons opened its first 2 stores in Northern Ireland in 2018. One on Fountain Street in Belfast city centre, and another drive-thru store at the Connswater Retail Park in East Belfast. As of August 2021, Tim Hortons has 37 locations in the United Kingdom, with the newest branch opening in Chester in July 2021. In December 2017, Tim Hortons opened two stores in the centre of Madrid and later opened another in the city of Pozuelo de Alarcón, in the Community of Madrid. The menu also includes typical Mediterranean drinks apart from the typical drinks of a Tim Hortons.

Question: when did tim hortons open in the usa?
Answer: 1981.