Question: UFC 55: Fury was a mixed martial arts event held by the Ultimate Fighting Championship on October 7, 2005 at the Mohegan Sun Arena in Uncasville, Connecticut, this would be the last UFC to air live on a Friday until which mixed martial arts pay-per-view event held by the Ultimate Fighting Championship on Friday December 30, 2011, at the MGM Grand Garden Arena in Las Vegas, Nevada?
Context: UFC 148: Silva vs. Sonnen II was a mixed martial arts event held by the Ultimate Fighting Championship on July 7, 2012 at the MGM Grand Garden Arena in Las Vegas, Nevada.  It was the seventeenth UFC event of the year.  The card consisted of eleven bouts, with six televised live on pay-per-view, four preliminary bouts on FX, and one on Facebook. UFC 55: Fury was a mixed martial arts event held by the Ultimate Fighting Championship on October 7, 2005 at the Mohegan Sun Arena in Uncasville, Connecticut.  The event was broadcast live on pay-per-view in the United States, and later released on DVD.  This would be the last UFC to air live on a Friday until UFC 141, which aired on December 30, 2011. UFC 116: Lesnar vs. Carwin was a mixed martial arts event held by the Ultimate Fighting Championship on July 3, 2010 at the MGM Grand Garden Arena in Las Vegas, Nevada.  The show was voted as the Best Major Show in the 2010 Wrestling Observer Newsletter Awards, the first time a UFC show won the award.  This was the third-best selling pay-per-view in UFC history behind UFC 194. UFC 91: Couture vs. Lesnar was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on November 15, 2008 at the MGM Grand Garden Arena in Las Vegas, Nevada. UFC 39: The Warriors Return was a mixed martial arts event held by the Ultimate Fighting Championship on September 27, 2002, at the Mohegan Sun Arena in Uncasville, Connecticut.  The event was broadcast live on pay per view in the United States, and was the first UFC event to be released on DVD. UFC 35: Throwdown was a mixed martial arts event held by the Ultimate Fighting Championship at the Mohegan Sun Arena in Uncasville, Connecticut on January 11, 2002.  The event was seen live on pay per view in the United States, and later released on home video. UFC 92: The Ultimate 2008 was a mixed martial arts (MMA) pay-per-view event held by the Ultimate Fighting Championship (UFC) on December 27, 2008 at the MGM Grand Garden Arena in Las Vegas, Nevada. UFC 141: Lesnar vs. Overeem was a mixed martial arts pay-per-view event held by the Ultimate Fighting Championship on Friday December 30, 2011, at the MGM Grand Garden Arena in Las Vegas, Nevada. UFC 66: Liddell vs. Ortiz was a mixed martial arts (MMA) pay-per-view event held by the Ultimate Fighting Championship on December 30, 2006 at the MGM Grand Garden Arena in Las Vegas, Nevada. UFC 146: dos Santos vs. Mir was a mixed martial arts (MMA) pay-per-view event (PPV) promoted by the Ultimate Fighting Championship (UFC) on May 26, 2012 at the MGM Grand Garden Arena in Las Vegas, Nevada.  The main card featured five MMA bouts which were shown on PPV, as well as seven preliminary bouts which were shown on FX, and Facebook.  This was the first time in UFC history that the main card featured all heavyweight bouts.  It was the twelfth UFC event of 2012.
Answer: UFC 141