The helicopter shot in cricket is the act of flicking the bat toward the leg side when facing a yorker or a fuller-length delivery, and finishing the stroke with a flourish by twisting the bat in an overhead circle.
 This shot, which requires excellent timing and wristwork, is considered a newer innovation in cricket, and is seen as an unconventional form of batsmanship.
Santosh Lal (4 December 1983 – 17 July 2013) was an Indian cricketer.
 He played eight first-class matches for Jharkhand between 2004 and 2008.
 He taught MS Dhoni how to play the helicopter shot.
C. K. Lal (Nepali: सीके लाल, born 1956) is a journalist, political columnist, and engineer from Nepal, known for his columns in daily newspapers in Nepal and India, his frequent participation in academic circles, and his 2010 play "Sapanako Sabiti" (Nepali: सपनाको साविती) premiered in Gurukul.
 His book "Human Rights, Democracy and Governance" was published in early 2010 by Pearson, New Delhi.
 He is also known for his book "To Be A Nepalese", published in 2012 by Martin Chautari, Kathmandu.
 The book was originally published as "Nepaliya Hunalai" (Nepali: "नेपालीय हुनलाई ") He is also co-editor of the volume "Chapama Dalit" (Nepali: छापामा दलित) published by Ekta Books, Kathmandu (2001).
Brian Helicopter is the stage name of Gareth Holder (born 27 June 1958, Leamington Spa), an English musician, based in the United States.
 He is best known for playing bass guitar for the UK punk rock band The Shapes.
 He also played for many other bands, the most notable being the NWOBHM bands Rogue Male and HellsBelles.
 For a short time in the early 1980s, he was also a member of British R&B band The Mosquitos, with guitarist Steve Walwyn of Dr. Feelgood and Eddie and the Hot Rods, and can be seen on the cover of The Mosquitos only single "Somethin' Outta Nothin'".
 A prolific session player, he appears both credited and uncreditied on many releases throughout the 1980s and early 1990s under both his real and stage name.
 He was one of the first bassists in the nascent UK punk scene to adopt the Rickenbacker bass guitar which he still uses to this day.
 He was also one of the first bass guitarists in the world to use Trace Elliot amplification.
 His bass playing style is characterized by a very fast precise pick attack, and fast runs.
 Unusually for a bass guitarist, he sometimes utilizes an overhand tapping technique more common to six string players.
 He continues to play professionally, reverting between his real name and his stage name as the fancy takes him.
 He is also a professional skydiving coach and instructor, currently holding seven world records in the sport.
 He can be seen in an episode of MythBusters aired on the Discovery Channel taking presenter Kari Byron skydiving whilst testing the falling airplane blue ice myth.
 He is also a vegetarian.
 He can be seen in the independent film Six Sex Scenes and a Murder, in the role of the bounty hunter.
 He currently resides in California, where he plays bass for the San Francisco Bay Area band Ghosthookers.
 Ghosthookers released a record in 2008 which features Brian Helicopter on bass under his real name.
Mahendra Singh Dhoni (   ; commonly known as MS Dhoni; born 7 July 1981) is an Indian cricketer who captained the Indian team in limited-overs formats from 11th of September 2007 to 4th of January 2017 and in Test cricket from 2008 to 28th of December 2014.
 An attacking right-handed middle-order batsman and wicket-keeper, he is widely regarded as one of the greatest finishers in limited-overs cricket.
 He is also regarded to be one of the best wicket-keepers in world cricket and is known to have very fast hands.
 He made his One Day International (ODI) debut in December 2004 against Bangladesh, and played his first Test a year later against Sri Lanka.
Sara Shrawan (born 28 August) (सारा श्रवण) is an Indian Marathi actress and dancer who has had roles in many Marathi television serials.
 She started her career in acting in 2011 when she acted in a commercial play ‘Jalu Bai Halu’ produced by Atharva Theaters and directed by Santosh Pawar.
 Since then, she has acted in many serials including "Bhagyalakshmi" (Zee Marathi), "Pinjra" (Zee Marathi), "Tu Tithe Mi" (Zee Marathi), "Eka Peksha Ek" (Zee Marathi), and "Devyani" (Star Pravah).
Lakshmi Kant Jha, MBE (22 November 1913 – 16 January 1988), born in Bhagalpur, Bihar, or L. K. Jha as he was called, was the eighth Governor of the Reserve Bank of India from 1 July 1967 to 3 May 1970.
 A member of the 1936 batch of the Indian Civil Service,he was educated at BHU, Varanasi, Trinity College, Cambridge University, and London School of Economics,U.K .
 He studied economics at Cambridge when Keynes was teaching there.
 Jha was taught by another eminent teacher Harold Laski at the LSE.
 Jha rose to be a Deputy Secretary in the Department of Supply, during British rule and was appointed an MBE for his service in the 1946 New Year Honours.
 After Independence he had served as secretary in the Ministries of Industries, Commerce and Finance and Secretary to the Prime Minister of India, Lal Bahadur Shastri(1964–66) and Indira Gandhi(1966-67) prior to his appointment as Governor of RBI.
Aditya Santosh Raut (born 20 August 1993 in Pune, India) is an international open water swimmer, known for breaking many swimming records at a young age.
 At age 9 in 2002, he completed a 21-hour, 70-kilometre double crossing of the channel between Mumbai and Dharamtar.
 In 2009, at 16, he became the first person to swim nine channels in nine countries.
 He was the youngest person to swim the Cook Strait, the Strait of Gibraltar and the English Channel, and he holds many other world records for swimming.
 He is currently enrolled in Alliance University, Bangalore.
Kranti Prakash Jha is a Bollywood actor and model from Darbhanga, Bihar, best known for his role of Santosh Lal in the 2016 Indian biographical sports film "".
Didier Delsalle (born May 6, 1957, in Aix-en-Provence, France) is a fighter pilot and helicopter test pilot.
 On May 14, 2005, he became the first (and only) person to land a helicopter, the Eurocopter AS350 Squirrel, on the 8848 m summit of Mount Everest.

Question: When was the person who was taught how to play the helicopter shot by Santosh Lal born?
Answer: 7 July 1981