Question: An American amateur parachute jumper who reached 123,500 feet with his strato jump, had his record beaten by an Austrian skydiver who is best known for jumping to Earth from a helium balloon on what date?

Context paragraphs:
Smitty the Jumper: H. Truesdell Smith—known variously as "H. T. Smith", "Henry Truesdell Smith", "Harold Truesdell Smith", or "Daredevil Smitty" but best known as "Smitty the Jumper"—was an American exhibition parachutist and skydiver of the 1920s and 1930s—who made periodic returns to skydiving starting in the late 1950s, jumping in every subsequent decade until his death—becoming widely known as "the oldest living skydiver", a title he claimed until his death in 1995 at the age of 96.

Felix Baumgartner: Felix Baumgartner (] ; born 20 April 1969) is an Austrian skydiver, daredevil and BASE jumper.  He is best known for jumping to Earth from a helium balloon in the stratosphere on 14 October 2012.  Doing so, he set world records for skydiving an estimated 39 km , reaching an estimated top speed of 1357.64 km/h , or Mach 1.25,

David G. Simons: David G. Simons (June 7, 1922 – April 5, 2010) was an American physician turned U.S. Air Force lieutenant colonel who, as part of Project Manhigh, set a record of high-altitude balloon flight in 1957 at 19 miles above the Earth in an aluminum capsule suspended from a helium balloon.  He received the Distinguished Flying Cross for this record.  Simons was shown on the cover of "Life" of September 2, 1957, issue.

Explorer II: Explorer II was a manned U.S. high-altitude balloon that was launched on November 11, 1935 and reached a record altitude of 22,066 m .  Launched at 8:00 am from the Stratobowl in South Dakota, the helium balloon carried a two-man crew consisting of U. S. Army Air Corps Captains Albert W. Stevens and Orvil A. Anderson inside a sealed, spherical cabin.  The crew landed safely near White Lake, South Dakota at 4:13 pm and both were acclaimed as national heroes.  Scientific instruments carried on the gondola returned useful information about the stratosphere.  The mission was funded by the membership of the National Geographic Society.

M42 jacket: The combination of the Coat, Parachute Jumper and the Trousers, Parachute Jumper (known as the M42 jump uniform to collectors) and the high lace up Boots, Parachute Jumper collectively made up the uniform used by American paratroopers during the earlier and middle part of World War II.

Shital Mahajan: Shital Mahajan Rane, is an Indian extreme sportsperson, skydiver and the holder of five world records and 14 National records in the sport.  She is known as the first woman to perform first parachute jump of life without training over the Geographical North pole in minus 37 degree Celsius from 2400 ft, and first accelerated free fall jump without any trials over the Antarctica - South pole from 11,600 feet, in minus 38 degree Celsius the youngest woman to jump over both the North and South Poles, and the first woman jumper to perform it without trials.  The Government of India honored Mahajan in 2011, with the fourth highest civilian award of Padma Shri.

Nick Piantanida: Nicholas John "Nick" Piantanida (August 15, 1932 – August 29, 1966) was an American amateur parachute jumper who reached 123,500 feet (37,642 meters, 23.39 miles) with his "Strato Jump II" balloon on February 2, 1966, flying a manned balloon higher than anyone before, a record that stood until Felix Baumgartner's flight on October 14, 2012.

Cheryl Stearns: Cheryl Stearns (born c. 1954) is an American skydiver.  Stearns is noted for having won the Bronze Medal in Women's Overall Individual Style and Accuracy at the XXV World Parachuting Championships in Japan in 2000. Gold medal in overall women in 1978 and 1994.  Stearns is also noted for the most total parachute jumps made by a woman— nearly 20,000 jumps as of May 2014--as well as the most parachute jumps made in a 24-hour period by a woman—352 jumps from November 8–9, 1995.  More recently, Stearns had been involved in a project--StratoQuest--which endeavored to break Joseph Kittinger's long-standing record for the highest altitude parachute jump ever, with a jump from at least 110,000 feet.  Stearns made her first jump in 1971 at the age of 17 and is currently a pilot for American Airlines.  In 1977 she became the first female member of the Golden Knights, the U.S. Army's elite parachute team.  She served two 3-year tours with them.

Red Bull Stratos: Red Bull Stratos was a space diving project involving Austrian skydiver Felix Baumgartner.  On 14 October 2012, Baumgartner flew approximately 39 km into the stratosphere over New Mexico, United States, in a helium balloon before free falling in a pressure suit and then parachuting to Earth.  The total jump, from leaving the capsule to landing on the ground, lasted approximately ten minutes.  While the free fall was initially expected to last between five and six minutes, Baumgartner deployed his parachute after 4 minutes and 19 seconds.

Cliff jumping: Cliff jumping is jumping off a cliff as a form of sport.  When done without equipment, it may be also known as tombstoning.  It forms part of the sport of coastal exploration or "coasteering".  When performed with a parachute, it is known as BASE jumping.  The world record for cliff jumping is currently held by Laso Schaller, with a jump of 58.8 m (193 ft).

Supporting paragraphs: Nick Piantanida Felix Baumgartner
Answer: 14 October 2012