Question: Which date occurred first the end of Riley Hawk's amateur career or end of production of Skateboard Magazine ?

Context:
Patti McGee
Patti McGee (born August 23, 1945) was the 1965 Woman's first National Skateboard Champion, Santa Monica.
 Her first skateboard was built by her brother in wood shop from her own shoe skate as a surprise.
 Her second skateboard was a BunBuster.
 While on the Cooley Team, and standing on a BunBuster, Patti set the world record for the fastest girl on a skateboard at 47mph during Dick Clark's World Teen Fair 1964 held at the Orange County (CA) Fair Grounds.
 McGee was also the first female professional skateboarder.
 She was paid by Hobie/Vita Pak to travel and demonstrate the Hobie skateboard on a national level.
 This lasted almost a year until the craze subsided.
 During the tour, Patti appeared on the occupation-guessing TV game show What's My Line?
 on May 16, 1965 without a skateboard (but did not stump the panel), and with a skateboard on The Johnny Carson Show the following evening.
 Patti McGee was featured on the cover of "Life" magazine May 14, 1965 and the cover of the fourth issue of "Skateboarder" in October 1965.
The Surfer's Path
The Surfer's Path was a bi-monthly international surfing magazine founded by Alex Dick-Read.
 The magazine was established in 1997 as part of the Permanent Publishing stable (alongside "Whitelines Snowboard Magazine" and "Sidewalk Skateboard Magazine").
 The headquarters was originally in Cornwall.
 It was then owned by Factory Media and had its headquarters in London, England.
 From 2004 it was published on recycled paper.
 An American edition of the magazine was edited by Drew Kampion.
 "The Surfer's Path" closed its doors in January 2014.
Studebaker Power Hawk
The Studebaker Power Hawk was a two-door pillared coupe manufactured by the Studebaker-Packard Corporation for the 1956 model year only.
 The Power Hawk was technically part of the Studebaker Commander series, and featured the Commander's 259 cubic inch (4.2 L) V-8, which generated 170 hp with two-barrel carburetor or 185 hp with an optional four-barrel carb and dual exhaust.
 The Power Hawk was positioned between the base Flight Hawk pillared coupe and the Sky Hawk pillarless hardtop coupe.
 The car cost $2,101 before options and weighed 3,095 pounds (1404 kg).
 Both the Power Hawk and Flight Hawk were dropped at the end of the 1956 model year and replaced with the Studebaker Silver Hawk beginning in 1957.
 7,095 were produced in the one year of production.
Chris Senn (skateboarder)
Chris Senn (born December 11, 1972 in Costa Mesa, California, grew up in Grass Valley, California) is a professional skateboarder, known for his aggressive and spontaneous style.
 Current and past sponsors include Powell Skateboards Channel one Adrenalin Skateboards Emerica, Ace, Type-S, Paradox, Kamanu Charters and Toy Machine Skateboards.
 Notable accomplishments include three X-Games gold medals being ranked 2nd in the World in 2002 behind Rodil de Araujo, Jr, being voted Thrasher Skateboard Magazine Skater Of the Year in 1995 and being a two-time world champion.
Ercüment Aslan
A member of the Turkey national boxing team since 1988, Ercument’s amateur career record was 175-25.
 Highlights include being the Junior world amateur champion in Istanbul in 1994, 3rd at the 1997 World Amateur Boxing Championships in Budapest in 1997 and 2nd at the 1998 European Amateur Boxing Championships.
 Unfortunately an injury at the World Amateur Championships in Houston in 1999 caused him to miss out on selection for the 2000 Olympic Games.
 He had a successful professional career with 8 wins and 2 losses.
Lin Chung-chiu
Lin Chung-chiu (traditional Chinese: 林仲秋; born September 23, 1958 in Fengyuan City, Taichung County (now part of Taichung City), Taiwan) is a retired Taiwanese professional baseball player(position: first baseman, outfielder or designated hitter) and currently a baseball coach.
 During the 1980s Lin spent most of his amateur career in Japan and attended the 1988 Olympics for the Chinese Taipei national baseball team.
 After Professional baseball in Taiwan's debut in 1990, Lin left Japan to join CPBL's Mercuries Tigers in July 1990 and stayed with the team until its collapse in November 1999.
 He later played for the Sinon Bulls(2000~2001) and Chinatrust Whales(2002), and retired as a player midway in the Whale's 2002 season.
 Right after his retirement Lin was immediately promoted as the Whale's head coach until the end of CPBL's 2003 season.
 Between 2004 and 2006 Lin ran a small restaurant in his Fengyuan hometown.
 In early 2007, Lin returned to CPBL as Sinon Bulls' hitting coach and holds the position to date.
Alfred Shrubb
Alfred "Alfie" Shrubb (12 December 1879 – 23 April 1964) was an English middle and long distance runner.
 During an amateur career lasting from 1899 to 1905 (when he was barred from amateur competition for receiving payment for running) and a professional career from 1905 to 1912 he won over 1,000 races of about 1,800 started.
 At the peak of his career he was virtually unbeatable at distances up to 15 miles, often racing against relay teams so that the race would be more competitive.
 On 4 November 1904, at Ibrox Park, Glasgow, he broke the one hour run record as well as all amateur records from six to eleven miles, and all professional records from eight to eleven miles, running eleven miles, 1137 yards (18.742 km) in one hour.
 Altogether he set 28 world records.
Riley Hawk
Hudson Riley Hawk (born December 6, 1992), better known as Riley Hawk is an American professional skateboarder.
 He is the son of Tony Hawk.
 Unlike his father, who is known for his vert style, Riley is better known as a street skater.
 Riley turned pro on his 21st birthday in December 2013, and is sponsored by Baker, Lakai Limited footwear.
 He was the winner of "Skateboarder"s Amateur of the Year award.
Skateboarder (magazine)
As of August 2013, Skateboarder Magazine is primarily a digital skateboarding publication that produces a limited run of hard copy versions that are sold in skateboard shops.
 The publication was the United States (US)' first skateboarding magazine and, as of August 2013, its Editor/Photo Editor is Jaime Owens, while the magazine's Publisher is Jamey Stone.
 On August 19, 2013, the magazine's owner GrindMedia announced that the publication would cease production on October 15, 2013.
Juxtapoz
Juxtapoz Art & Culture Magazine (pronounced Jucks-tah-pose) is a magazine created in 1994 by a group of artists and collectors including Robert Williams, Fausto Vitello, C.R. Stecyk III (a.k.a. Craig Stecyk), Greg Escalante, and Eric Swenson to both help define and celebrate urban alternative and underground contemporary art.
 "Juxtapoz" is published by High Speed Productions, the same company that publishes "Thrasher" skateboard magazine in San Francisco, California.

Answer: October 15, 2013