Question: When did this American professional baseball pitcher playing for Nova Southeastern Sharks baseball pitch a no hitter? 

Context paragraphs:
David Berg (pitcher): David Andrew Berg (born March 28, 1993) is an American professional baseball pitcher in the Chicago Cubs organization.  He attended the University of California, Los Angeles (UCLA), where he played college baseball for the UCLA Bruins baseball team.  He was named an All-American and Pac-12 Conference Baseball Pitcher of the Year in 2013.  He set a National Collegiate Athletic Association (NCAA) record for saves in a single season with 24.  The Texas Rangers selected Berg in the 17th round of the 2014 Major League Baseball Draft.  He did not sign with the Rangers and returned to UCLA for his senior season.  He was then drafted by the Cubs in the sixth round of the 2015 MLB Draft.

Nova Southeastern Sharks baseball: The Nova Southeastern Sharks baseball program represents Nova Southeastern University in the National Collegiate Athletic Association's NCAA Division II level.  The Sharks have a very short history, having less than thirty years of play under their belt; however, the sharks have won the Division II championship in 2016, as well as producing several MLB stars, such as J. D. Martinez of the Arizona Diamondbacks, and Mike Fiers of the Houston Astros.  They are coached by Greg Brown.

Andrew Sisco: Andrew Frank Sisco (born January 13, 1983) is an American professional baseball pitcher for the Brother Elephants of the Chinese Professional Baseball League (CPBL).  He has played in Major League Baseball for the Kansas City Royals and Chicago White Sox, in the Korean Professional Baseball League for the KT Wiz, and in the Chinese Professional Baseball League for the EDA Rhinos and the Brother Elephants.

Mike DeMark: Michael Moise DeMark (born May 20, 1983) is an American professional baseball pitcher for the Uni-President 7-Eleven Lions of the Chinese Professional Baseball League.  A graduate of Penn-Trafford High School, he played college baseball at Marietta College.  He played in the minor league organizations of the San Diego Padres, Arizona Diamondbacks and Oakland Athletics.  He was a mid-season Texas League all-star in 2009 while playing for the San Antonio Missions.  He has also played Independent Baseball in the Atlantic League of Professional Baseball for the Somerset Patriots and the York Revolution.  He signed with the Uni-President 7-Eleven Lions for the 2017 season.

Chin-hui Tsao: Chin-Hui Tsao (; born June 2, 1981) is a Taiwanese former professional baseball pitcher.  He is the second major league player and the first major league pitcher from Taiwan, and like the first, former Los Angeles Dodgers outfielder Chin-Feng Chen, he is a Taiwanese aborigine of Amis ancestry.  He had previously played in Major League Baseball (MLB) for the Colorado Rockies and Dodgers before spending the 2009 season with the Brother Elephants in the Chinese Professional Baseball League (CPBL).  After the 2009 Taiwan Series, Tsao was investigated for game-fixing scandals, although he was ultimately not indicted on February 10, 2010.  Tsao was expelled by CPBL on December 23, 2009.  He has recorded the fastest pitch by a Taiwanese pitcher at 100 mph in 2005.

Deck McGuire: William Deck McGuire (born June 23, 1989) is an American professional baseball pitcher for the Cincinnati Reds of Major League Baseball (MLB).  He played college baseball for the Georgia Tech Yellow Jackets, and was named the Atlantic Coast Conference Baseball Pitcher of the Year in 2009.  He made his MLB debut in 2017.

Hub Kittle: Hubert Milton "Hub" Kittle (February 19, 1917 – February 10, 2004) was an American professional baseball pitcher, manager and front office executive in the minor leagues and a pitching coach at the Major League level.  When he took the mound for the Triple-A Springfield Redbirds in an official American Association game on August 27, 1980, at the age of 63, Kittle, a longtime minor league hurler whose professional career began in the 1930s, became the only man ever to pitch in professional baseball in six decades.  He retired the Iowa Oaks on 11 pitches.

Mark Wohlers: Mark Edward Wohlers (born January 23, 1970) is a former professional baseball pitcher.  A right-hander, he played all or part of twelve seasons in Major League Baseball, exclusively as a relief pitcher.  He is best known for his years with the Atlanta Braves from 1991 to 1999.  He is the third fastest recorded pitcher in baseball history, having thrown a pitch recorded at 103 miles per hour during a spring training session in 1995; the record was broken by Detroit Tigers pitcher Joel Zumaya with a 104 mi/h pitch.

Aroldis Chapman: Albertín Aroldis Chapman de la Cruz (] ; born February 28, 1988) is a Cuban-American professional baseball pitcher for the New York Yankees of Major League Baseball (MLB).  He previously played in MLB for the Cincinnati Reds and Chicago Cubs and in the Cuban National Series for Holguín.  Chapman bats and throws left-handed, and is nicknamed the Cuban Missile or the Cuban Flame Thrower due to the fact that he holds the record for the fastest recorded pitch speed in MLB history, at 105.1 mph (169.1 km/h) as well as the Guinness World Record for fastest baseball pitch for a male.

Mike Fiers: Michael Bruce Fiers (born June 15, 1985) is an American professional baseball pitcher for the Houston Astros of Major League Baseball (MLB).  He has also played in MLB for the Milwaukee Brewers.  Fiers pitched a no-hitter on August 21, 2015.

Supporting paragraphs: Nova Southeastern Sharks baseball Mike Fiers
Answer: on August 21, 2015