On 27 May 2008, Kevin Whittaker and Cory Jens broke the Guinness World Record for the World's Longest Handshake (single hand) in San Francisco, California, by shaking hands for 9 hours and 30 minutes, besting the previous record of 9 hours and 19 minutes set in 2006. This record stood briefly until 16 August 2008 when Kirk Williamson and Richard McCulley were recognized by Guinness World Records for the longest time two people shook hands uninterruptedly for 10 hours at Aloha Stadium in Aiea, Hawaii. On 21 September 2009, Jack Tsonis and Lindsay Morrison then broke that record by shaking hands for 12 hours, 34 minutes and 56 seconds. Their record was broken less than a month later in Claremont, California, when John-Clark Levin and George Posner shook hands for 15 hours, 15 minutes, and 15 seconds. The next month, on 21 November, Matthew Rosen and Joe Ackerman surpassed this feat, with a new world record time of 15 hours, 30 minutes and 45 seconds.
On 27 May 2008, Kevin Whittaker and Cory Jens broke the Guinness World Record for the World's Longest Handshake (single hand) in San Francisco, California, by shaking hands for 9 hours and 30 minutes, bestin,g the previous record of 9 hours and 19 minutes set in 2006. This record stood briefly until 16 August 2008 when Kirk Williamson and Richard McCulley were recognized by Guinness World Records for the longest time two people shook hands uninterruptedly for 10 hours at Aloha Stadium in Aiea, Hawaii. On 21 September 2009, Jack Tsonis and Lindsay Morrison then broke that record by shaking hands for 12 hours, 34 minutes and 56 seconds. Their record was broken less than a month later in Claremont, California, when John-Clark Levin and George Posner shook hands for 15 hours, 15 minutes, and 15 seconds. The next month, on 21 November, Matthew Rosen and Joe Ackerman surpassed this feat, with a new world record time of 15 hours, 30 minutes and 45 seconds.