Question:  when is the American basketball coach which Boston Celtics hired in  2004–05 born 
Context: Arnold Jacob "Red" Auerbach (September 20, 1917 – October 28, 2006) was an American basketball coach of the Washington Capitols, the Tri-Cities Blackhawks and the Boston Celtics.  After he retired from coaching, he served as president and front office executive of the Celtics until his death.  As a coach, he won 938 games (a record at his retirement) and nine National Basketball Association (NBA) championships in ten years (a number surpassed only by Phil Jackson, who won 11 in twenty years).  As general manager and team president of the Celtics, he won an additional seven NBA titles, for a grand total of 16 in a span of 29 years, making him one of the most successful team officials in the history of North American professional sports. Kobe Bryant is an American basketball shooting guard who played for the Los Angeles Lakers of the National Basketball Association (NBA).  Selected 13th overall by the Charlotte Hornets in the 1996 NBA draft, Bryant was traded to the Lakers for Vlade Divac a month later.  He led the Lakers to three consecutive NBA championships playing alongside Shaquille O'Neal from 2000 to 2002.  After O'Neal was traded to the Miami Heat before the 2004–05 season, Bryant "became the cornerstone" of the Lakers franchise.  He led the NBA in scoring during the and seasons.  In the 2007–08 season, Bryant won the Most Valuable Player Award (MVP) and led his team to the 2008 NBA Finals, where the Lakers lost to the Boston Celtics.  After winning the gold medal in the 2008 Summer Olympics as a member of the U.S. men's basketball team, he led the Lakers to two more championships in 2009 and 2010, defeating the Orlando Magic and the Boston Celtics. The 2004–05 NBA season was the 59th season for the Boston Celtics in the National Basketball Association.  The season is memorable when the team hired Doc Rivers to be their head coach for the upcoming season.  During the offseason, the Celtics acquired All-Star guard Gary Payton, and former Celtics forward Rick Fox from the Los Angeles Lakers, but Fox would retire before the season.  The Celtics struggled playing under .500 for the first half of the season.  At midseason, Payton was traded to the Atlanta Hawks for former Celtic All-Star forward Antoine Walker.  However, Payton would never suit up for the Hawks and was released shortly after.  He then re-signed with the Celtics afterwards for the remainder of the season.  The team went on a 7-game winning streak in March, finishing first place in the Atlantic Division with a 45–37 record.  Paul Pierce was selected for the 2005 NBA All-Star Game. Richard W. "Rich" Niemann (born July 2, 1946) is a former American basketball player who played at center in the National Basketball Association and American Basketball Association.  Niemann was originally drafted in the fourth round of the 1968 NBA draft by the Detroit Pistons.  That season, he was traded from the Pistons to the Milwaukee Bucks along with cash for Dave Gambee.  Later that year, he was claimed by the Boston Celtics after he was waived by the Bucks.  After his time with the Celtics, he played the rest of his career in the American Basketball Association.  He now helps coach and instruct the girls varsity team for Kennedy Catholic High School. Glenn Anton "Doc" Rivers (born October 13, 1961) is an American basketball coach and former player.  He is the current head coach for the Los Angeles Clippers.  As an NBA point guard, Rivers was known for his defense. The 1946–47 Boston Celtics season was the first season of the Boston Celtics in the Basketball Association of America (BAA/NBA).  Walter A. Brown was the man who was responsible for starting the franchise.  On an early June day in 1946, Brown, who operated the Boston Garden arena and was part of the National Hockey League's Boston Bruins, was the driving force behind the Basketball Association of America and the Celtics birth.  After considering several team names, including Whirlwinds, Unicorns and Olympics, Brown opted for Celtics.  He hoped to grab the attention of Boston's large Irish American population.  John Davis "Honey" Russell was hired as the first Celtics coach, and the team soon began its inaugural season, losing its first game 59–53 to the Providence Steamrollers.  Although the Celtics would eventually become the signature franchise of the NBA, the club had a lacklustre first season as they started with 0 wins and 5 losses.  The Celtics won their first game of the season against the Toronto Huskies. The 2012–13 Boston Celtics season was the 67th season of the franchise in the National Basketball Association (NBA).  The Boston Celtics finished the regular season with a 41–40 won-loss record, which was the 3rd best in the Atlantic division, bringing an end to the 5-year run as Atlantic Champs and 7th best in the East.  Their longest winning and losing streaks were 7 and 6 games respectively.  The leading scorer was Paul Pierce, averaging 18.6 PPG.  The leading rebounder was Kevin Garnett (7.8 RPG).  Rajon Rondo led the team and the league in assists per-game with 11.1 despite only playing 38 games due to ACL injury.  The Celtics only played 81 games as their April 16 game was cancelled in the aftermath of the Boston Marathon bombing and was not rescheduled because it would not have changed any part of the final Eastern Conference standings anyway.  The Celtics would go on to lose in the first round of the playoffs for the first time since the 2004–05 season.  This season would mark the end of the Paul Pierce and Kevin Garnett era in Boston as they were traded to the Brooklyn Nets during the 2013 off-season. The 1988–89 Boston Celtics season was the 43rd season of the Boston Celtics in the National Basketball Association (NBA).  This was the first season for Jim Rodgers as head coach.  Rodgers had been a Celtics assistant coach prior to this season.  This year's Celtics team was severely hindered by the loss of star forward Larry Bird to a heel injury which required surgery.  Bird played only six early-season games before being lost to injury.  Initially, Bird was expected back in March, but it was delayed and ultimately became a season-ending injury.  The results were dramatic as the Celtics, who had averaged over 60 wins per season thus far in the 1980s, fell to just 42 wins in this season.  Coming into the season, the Celtics had been the Eastern Conference's #1 seed five years in a row.  This season they were the #8 seed, clinching a playoff spot in the season's final game.  This season included some bright spots, particularly the emergence of guard Reggie Lewis, who had been only a minimal bench contributor in his rookie season of 1987-88, but averaged nearly 20 points per game as a starter in 1988-89. John P. Killilea (June 19, 1928 – January 27, 1996) was an American basketball coach and scout.  He served as the assistant coach to four National Basketball Association (NBA) team; the Boston Celtics (1972–77), the Milwaukee Bucks (1977–1983), the New Jersey Nets (1983–85), the Houston Rockets (1989–1993).  Killilea was hired by the Topeka Sizzlers of the Continental Basketball Association (CBA) as their head coach in 1986 and served in that capacity until he was fired in January 1988 after being called for 14 technical fouls and ejected from three games. The Los Angeles Lakers are an American professional basketball team based in Los Angeles, California.  They play in the Pacific Division of the Western Conference in the National Basketball Association (NBA).  The Lakers' franchise was founded in 1947 in Detroit, Michigan before moving to Minneapolis, Minnesota, where the team got its official title from the state's nickname, "Land of 10,000 Lakes".  The Minneapolis Lakers won five NBA Finals before relocating to Los Angeles in the 1960–61 NBA season, becoming the first West Coast team in league history.  In the 1960s, the Lakers reached the NBA Finals six times, but lost every series to the Boston Celtics, beginning their long and storied rivalry.  In 1972, with future Hall of Famers Wilt Chamberlain, Gail Goodrich, and Jerry West, the Lakers compiled a 33-game winning streak, the longest streak in U.S. professional team sports, and won their sixth title under coach Bill Sharman.  The Lakers' popularity soared in the 1980s when they won five additional championships during a nine-year span with the help of Hall of Famers Magic Johnson, Kareem Abdul-Jabbar, James Worthy and coach Pat Riley, the franchise's all-time leader in both regular season and playoff games coached and wins.  Two of those championships during that span were against their arch-rivals, the Boston Celtics.  With the team of Shaquille O'Neal, Kobe Bryant, Toby Tincher, and Hall of Fame coach Phil Jackson, the Lakers played in four of the first five NBA Finals of the 21st century; winning three consecutively from 2000 to 2002, and losing the fourth in 2004.  The Lakers would then conclude the decade with three straight Finals appearances; losing to the Boston Celtics in 2008 but then prevailing with back-to-back championships against the Orlando Magic in 2009 and the Boston Celtics in 2010.  The 2010 championship marks the 16th NBA championship in Lakers franchise history.
Answer: October 13, 1961