The Supreme Court will on Wednesday deliver its verdict on the constitutional validity of Aadhaar. After a marathon hearing that lasted 38 working days spread over four months, a five-judge Constitution bench headed by Chief Justice of India Dipak Misra had in May reserved its judgment on a clutch of petitions challenging the Constitutional validity of the 2016 Aadhaar Act. Here is a timeline of India's UID: Govt, 2009-10 January 28, 2009: Planning Commission notification on UIDAI September 2010: Programme launched in rural Maharashtra 2010-2011: National Identification Authority of India Bill, 2010 introduced; later referred to the Standing Committee on Finance, whose report flags issues of privacy, sensitive information etc Follow LIVE Updates on Aadhaar verdict in Supreme Court Court, 2012-13 November 30, 2012: First notice from Supreme Court following several PILs, with retired Justice K S Puttaswamy as the lead petitioner September 23, 2013: Two-judge Bench orders all matters be heard November 26, 2013: Bench orders that all states and Union Territories be impleaded as respondents Read | Verdict day in Aadhaar battle Bill passage, 2016 March 3, 2016: Aadhaar (Targeted Delivery of Financial and Other Subsidies, Benefits and Services) Bill 2016 introduced in Lok Sabha; later passed as Money Bill May 10: Congress leader Jairam Ramesh moves SC challenging passage as Money Bill October 21: S G Vombatkere vs Union of India challenges validity of Aadhaar Act Also Read | A blow by blow account of what happened during marathon SC hearing Linkage rules, 2017 March 31: Government introduces Section 139AA to Income-Tax Act, making Aadhaar mandatory for PAN applications, filing returns June 1: Aadhaar made mandatory for opening and maintaining bank accounts, for transactions of Rs 50,000 or more etc June 9: Two-judge Bench upholds I-T Act Section 139AA; however, for those without Aadhaar card holders, PAN cards not to be treated as invalid for time being Privacy and after, 2017-18 August 24, 2017: Nine-judge Bench rules that right to privacy is a fundamental right January 17, 2018: Five-judge Bench begins hearing Aadhaar case May 10: SC reserves verdict