Question: When did the torch visit the birthplace of Saurabh Narain Singh?

full_context: Document 1: 2008 Summer Olympics torch relay: Thailand: The April 18 relay through Bangkok was the Olympic flame's first visit to Thailand. The relay covered just over 10 km, and included Bangkok's Chinatown. The torch was carried past Democracy Monument, Chitralada Palace and a number of other city landmarks. M.R. Narisa Chakrabongse, Green World Foundation (GWF) chairwoman, withdrew from the torch-running ceremony, protesting against China's actions in Tibet. Several hundred protesters were present, along with Olympic supporters. Thai authorities threatened to arrest foreign protesters and ban them from future entry into Thailand. A coalition of Thai human rights groups announced that it would organise a "small demonstration" during the relay, and several hundred people did indeed take part in protests, facing Beijing supporters. Intended torchbearer Mom Rajawongse Narissara Chakrabongse boycotted the relay, to protest against China's actions in Tibet. In Bangkok, students told the media that the Chinese Embassy provided them with transportation and gave them shirts to wear.
Document 2: 2008 Summer Olympics torch relay: Wary of protests, the Indian authorities have decided to shorten the route of the relay in New Delhi, and have given it the security normally associated with Republic Day celebrations, which are considered terrorist targets. Chinese intelligence's expectations of points on the relay route that would be particularly 'vulnerable' to protesters were presented to the Indian ambassador to Beijing, Nirupama Sen. The Indian media responded angrily to the news that the ambassador, a distinguished lady diplomat, was summoned to the Foreign Ministry at 2 am local time; the news was later denied by anonymous sources in Delhi. The Indian media reported that India's Commerce Minister, Kamal Nath, cancelled an official trip to Beijing in protest, though both Nath and Chinese sources have denied it.
Document 3: Euvin Naidoo: In 2011 Euvin Naidoo was selected by Forbes onto their Top 10 most Powerful and Influential Men under Forty in Africa list. He is currently a banking executive in Johannesburg, South Africa. A graduate of the Harvard Business School (HBS), Euvin Naidoo is also an alumnus of global international management consulting firm McKinsey & Co., having started his career at the Firm in the 1990s with a focus on growth strategies, turnarounds and engagements in Africa within financial services (banking/insurance), telecommunications (fixed and mobile), metals & mining (steel and coal) and airlines/transport (operational efficiency, marketing and new sales channels).
Document 4: Gurcharan Das: Gurcharan Das graduated with honours from Harvard University in Philosophy. He was later attended Harvard Business School (AMP), where he is featured in three case studies. He was CEO of Procter & Gamble India and later managing director, Procter & Gamble Worldwide (Strategic Planning). At age 50, he took early retirement to become a full-time writer.
Document 5: 2008 Summer Olympics torch relay: In many cities along the North American and European route, the torch relay was protested by advocates of Tibetan independence, animal rights, and legal online gambling, and people protesting against China's human rights record, resulting in confrontations at a few of the relay locations. These protests, which ranged from hundreds of people in San Francisco, to effectively none in Pyongyang, forced the path of the torch relay to be changed or shortened on a number of occasions. The torch was extinguished by Chinese security officials several times during the Paris leg for security reasons, and once in protest in Paris.
Document 6: 2008 Summer Olympics torch relay: Reports on the Delhi relay were similarly distinct. Despite intended torchbearers Kiran Bedi, Soha Ali Khan, Sachin Tendulkar and Bhaichung Bhutia all withdrawing from the event, the official Chinese website for the relay reported "Indian torchbearers vow to run for spirit of Olympics", and quoted torchbearers Manavjit Singh Sandhu, Abhinav Bindra, Ayaan Ali Khan and Rajinder Singh Rahelu all stating that sports and politics should not be mixed.
Document 7: Kamakhya Narain Singh: He was educated at Rajkumar College, Raipur and at Mayo College, Ajmer. He became the Raja of Ramgarh in 1919 upon death of his father, Raja Lakshmi Narain Singh. He formed his own political party (Janta Party of Ramgarh) and was a prominent leader in Bihar at that time. His family (Narain Raj Parivar) was the first family in India to use helicopters in election campaign. He served as the Vice-President of the Bihar Landholder's Association and the All India Kshatriya Mahasabha. He was also Member of the Managing Committee and General Council of Rajkumar College; Member of the Executive Body of the Bihar War Committee. He served as president of Akhil Bharatiya Kshatriya Mahasabha in 1943 and 1953.
Document 8: 2008 Summer Olympics torch relay: The noted Indian social activist and a retired Indian Police Service (IPS) officer Kiran Bedi refused to participate saying "she doesn’t want to run in the event as ‘caged woman’." On April 15, Bollywood actress Soha Ali Khan pulled out of the Olympic torch relay, citing “very strong personal reasons”. On April 16, a protest was organised in Delhi "against Chinese repression in Tibet", and was broken up by the police.
Document 9: 2008 Summer Olympics torch relay: India rejected Chinese demands that the torch route be clear of India's 150,000-strong Tibetan exile community, by which they required a ban on congregation near the curtailed 3 km route. In response Indian officials said India was a democracy, and "a wholesale ban on protests was out of the question". Contradicting some other reports, Indian officials also refused permission to the "Olympic Holy Flame Protection Unit". The combined effect is a "rapid deterioration" of relations between India and China. Meanwhile, the Tibetan government in exile, which is based in India, has stated that it did not support the disruption of the Olympic torch relay.
Document 10: Neha Devi Singh: Neha Devi Singh was born on 9 August 1981 in Mumbai, India. Singh received a degree in Economics from St. Xavier's College. She set out to seek work in the television industry. She pursued a career as a director or producer, but became an actor.
Document 11: 2008 Summer Olympics torch relay: Indonesia: The Olympic flame reached Jakarta on April 22. The original 20 km relay through Jakarta was cancelled due to "security worries", at the request of the Chinese embassy, and the torch was instead carried round the city main's stadium, as it had been in Islamabad. Several dozen pro-Tibet protesters gathered near the stadium, and were dispersed by the police. The event was held in the streets around the city main's stadium. The cancelling of the relay through the city itself was decided due to security concerns and at the request of the Chinese embassy. Only invitees and journalists were admitted inside the stadium. Protests took place outside the stadium.
Document 12: New Delhi: Connaught Place, one of North India's largest commercial and financial centres, is located in the northern part of New Delhi. Adjoining areas such as Barakhamba Road, ITO are also major commercial centres. Government and quasi government sector was the primary employer in New Delhi. The city's service sector has expanded due in part to the large skilled English-speaking workforce that has attracted many multinational companies. Key service industries include information technology, telecommunications, hotels, banking, media and tourism.
Document 13: Manpreet Singh Badal: Manpreet Singh Badal was born on 26 July 1962 in Muktsar. His father is Gurdas Singh Badal, the brother of former Punjab Chief Minister Parkash Singh Badal. Manpreet Singh Badal attended The Doon School and St. Stephen's College, University of Delhi. He is fluent in Urdu besides Punjabi. He was subsequently awarded a law degree by the University of London.
Document 14: 2008 Summer Olympics torch relay: India: Due to concerns about pro-Tibet protests, the relay through New Delhi on April 17 was cut to just 2.3 km (less than 1.5 miles), which was shared amongst 70 runners. It concluded at the India Gate. The event was peaceful due to the public not being allowed at the relay. A total of five intended torchbearers -Kiran Bedi, Soha Ali Khan, Sachin Tendulkar, Bhaichung Bhutia and Sunil Gavaskar- withdrew from the event, citing "personal reasons", or, in Bhutia's case, explicitly wishing to "stand by the people of Tibet and their struggle" and protest against the PRC "crackdown" in Tibet. Indian national football captain, Baichung Bhutia refused to take part in the Indian leg of the torch relay, citing concerns over Tibet. Bhutia, who is Sikkimese, is the first athlete to refuse to run with the torch. Indian film star Aamir Khan states on his personal blog that the "Olympic Games do not belong to China" and confirms taking part in the torch relay "with a prayer in his heart for the people of Tibet, and ... for all people across the world who are victims of human rights violations". Rahul Gandhi, son of the Congress President Sonia Gandhi and scion of the Nehru-Gandhi family, also refused to carry the torch.
Document 15: Saurabh Narain Singh: Singh was born in New Delhi, and studied at The Modern School, The Doon School, Dayal Singh College, Delhi, and University of Western Australia. He has previously worked for Citicorp.
ground_truth: April 17
sub_queries: Saurabh Narain Singh >> place of birth Answer: New Delhi
When did the torch visit New Delhi ? Answer: April 17