Question: When did the drinking age become 21 in WJQM's state?

full_context: Document 1: Alcohol laws of New York: In response to the National Minimum Drinking Age Act in 1984, which reduced by up to 10% the federal highway funding of any state which did not have a minimum purchasing age of 21, the New York Legislature raised the drinking age from 19 to 21, effective December 1, 1985. (The drinking age had been 18 for many years before the first raise in 1984, to 19.) Persons under 21 are prohibited from purchasing alcohol or possessing alcohol with the intent to consume, unless the alcohol was given to that person by their parent or legal guardian. There is no law prohibiting where people under 21 may possess or consume alcohol that was given to them by their parents. Persons under 21 are prohibited from having a blood alcohol level of 0.02% or higher while driving.
Document 2: WJMI: WJMI (99.7 FM) is a radio station licensed to Jackson, Mississippi, United States, with a Mainstream Urban musical format. The station is owned by Alpha Media through licensee Alpha Media Licensee LLC. Along with five other sister stations, its studios are located in Ridgeland, a suburb of Jackson, while the transmitter tower is south of Raymond.
Document 3: WJWZ: WJWZ, also known as 97.9 Jamz, is an urban contemporary formatted radio station that serves the Montgomery Metropolitan Area, broadcasting on the FM band at a frequency of 97.9 MHz and licensed to Wetumpka, Alabama. The station is locally owned and operated by Bluewater Broadcasting Company, LLC. The station's transmitter is located in Montgomery. The station's studios are located on Wall St. in Midtown Montgomery.
Document 4: Alcohol laws of Wisconsin: The drinking age in Wisconsin is 21. Those under the legal drinking age may be served, possess, or consume alcohol if they are with a parent, legal guardian, or spouse who is of legal drinking age. Those age 18 to 20 may also possess (but not consume) alcohol as part of their employment.
Document 5: Alcohol laws of Wisconsin: The 1983 Wisconsin Act 74, effective July 1, 1984, created a drinking age of 19. Meeting in special session at the call of the governor, the legislature enacted 1985 Wisconsin Act 337, which raised the drinking age to 21 and brought the state into compliance with the NMDA (National Minimum Drinking Age) on September 1, 1986.
Document 6: Alcohol laws of Wisconsin: The drinking age in Wisconsin is 21. Those under the legal drinking age may be served, possess, or consume alcohol if they are with a parent, legal guardian, or spouse who is of legal drinking age. Those age 18 - 20 may also be served, possess or consume alcohol if they are with a parent, legal guardian, or spouse who is of legal drinking age. Those age 18 to 20 may also possess (but not consume) alcohol as part of their employment.
Document 7: WAJM: WAJM, assigned to 88.9 FM and licensed to Atlantic City, New Jersey, is a high school radio station owned by the Atlantic City Board of Education and is operated by the students of Atlantic City High School. Currently, WAJM broadcasts live Monday thru Friday from 7:00am to 3:30pm and during after hours, on weekends, holidays and when Atlantic City High School is closed due to inclement weather the station operates on an automated system where music, station IDs and PSA are shuffled and broadcast on-air. Starting at its inception WAJM had been broadcasting with a jazz radio format until 2009 when it flipped to a freeform radio format using the moniker 88.9 The Jam. The studios, offices and transmitter are located on the campus of Atlantic City High School on North Albany Avenue in Atlantic City. In 2009 WAJM began simulcasting its live and automated broadcasts via the Internet in both an audio only feed and audio/video feed. The station was a creation of Mr.Norman Draper. The first school year of on air broadcasting was 1996-97. That year the students interviewed "Sugar" Ray Leonard, and did a live simulcast from the grand opening of the new Atlantic City Convention Center.
Document 8: WWQM-FM: WWQM-FM (106.3 MHz) is a radio station licensed to Middleton, Wisconsin and serving the Madison area. Owned and operated by Mid-West Family Broadcasting, the station has aired a country music format since 1981.
Document 9: History of radio: On February 17, 1919, station 9XM at the University of Wisconsin in Madison broadcast human speech to the public at large. 9XM was first experimentally licensed in 1914, began regular Morse code transmissions in 1916, and its first music broadcast in 1917. Regularly scheduled broadcasts of voice and music began in January 1921. That station is still on the air today as WHA.
Document 10: WIXL-LP: WIXL-LP (97.1 FM) is a radio station licensed to Madison, Wisconsin, United States, the station serves the Madison area. The station is currently owned by City Church, Inc. It broadcasts a Christian rock format. After many delays, the station went on air just ahead of an FCC deadline.
Document 11: U.S. history of alcohol minimum purchase age by state: From 1976 to 1983, several states voluntarily raised their purchase ages to 19 (or, less commonly, 20 or 21), in part to combat drunk driving fatalities. In 1984, Congress passed the National Minimum Drinking Age Act, which required states to raise their ages for purchase and public possession to 21 by October 1986 or lose 10% of their federal highway funds. By mid-1988, all 50 states and the District of Columbia had raised their purchase ages to 21 (but not Puerto Rico, Guam, or the Virgin Islands, see Additional Notes below). South Dakota and Wyoming were the final two states to comply with the age 21 mandate. The current drinking age of 21 remains a point of contention among many Americans, because of it being higher than the age of majority (18 in most states) and higher than the drinking ages of most other countries. The National Minimum Drinking Age Act is also seen as a congressional sidestep of the tenth amendment. Although debates have not been highly publicized, a few states have proposed legislation to lower their drinking age, while Guam has raised its drinking age to 21 in July 2010.
Document 12: WTAQ: WTAQ (1360 AM) and WTAQ-FM (97.5 FM) are conservative news/talk-formatted radio stations, licensed to Green Bay, Wisconsin (AM) and Glenmore, Wisconsin (FM), that serve the Green Bay and Appleton-Oshkosh areas. The stations are owned by Midwest Communications.
Document 13: WJQM: WJQM (93.1 FM) is a radio station serving Madison, Wisconsin and surrounding areas. The station is owned by Mid-West Family Broadcasting and launched a Rhythmic Contemporary format as "106.7 Jamz" in January 2007 before the move to 93.1 FM in October 2008.
Document 14: Alcohol laws of New York: In response to the National Minimum Drinking Age Act in 1984, which reduced by up to 10% the federal highway funding of any state which did not have a minimum purchasing age of 21, the New York Legislature raised the drinking age from 19 to 21, effective December 1, 1985. (The drinking age had been 18 for many years before the first raise on December 4th, 1982, to 19.) Persons under 21 are prohibited from purchasing alcohol or possessing alcohol with the intent to consume, unless the alcohol was given to that person by their parent or legal guardian. There is no law prohibiting where people under 21 may possess or consume alcohol that was given to them by their parents. Persons under 21 are prohibited from having a blood alcohol level of 0.02% or higher while driving.
Document 15: National Minimum Drinking Age Act: The National Minimum Drinking Age Act of 1984 (23 U.S.C. § 158) was passed by the United States Congress on July 17, 1984. It was a controversial bill that punished every state that allowed persons below 21 years to purchase and publicly possess alcoholic beverages by reducing its annual federal highway apportionment by 10 percent. The law was later amended, lowering the penalty to 8 percent from fiscal year 2012 and beyond.
ground_truth: September 1, 1986
sub_queries: What state is WJQM located? Answer: Wisconsin
when did the drinking age change to 21 in Wisconsin Answer: September 1, 1986