concluding speech in constituent assembly on 25 November 1949 stated that: While deliberating the revised draft constitution, the assembly moved, discussed and disposed off 2,473 amendments out of a total of 7,635. Before adopting the constitution, the assembly held eleven sessions in 165 days. On 26 November 1949, it adopted the constitution, which was signed by 284 members. The day is celebrated as National Law Day, or Constitution Day. The day was chosen to spread the importance of the constitution and to spread thoughts and ideas of Ambedkar. The assembly's final session convened on 24 January 1950. Each member signed two copies of the constitution, one in Hindi and the other in English. The original constitution is hand-written, with each page decorated by artists from Shantiniketan including Beohar Rammanohar Sinha and Nandalal Bose. Its calligrapher was Prem Behari Narain Raizada. The constitution was published in Dehradun and photolithographed by the Survey of India. Production of the original constitution took nearly five years. Two days later, on 26 January 1950, it became the law of India. The estimated cost of the Constituent Assembly was 6.3 crore. The constitution has had more than 100 amendments since it was enacted. Influence of other constitutions Structure The Indian constitution is the world's longest for a sovereign nation. At its enactment, it had 395 articles in 22 parts and 8 schedules. At about 145,000 words, it is the second-longest active constitution—after the Constitution of Alabama—in the world. The constitution has a preamble and 470 articles, which are grouped into 25 parts. With 12 schedules and five appendices, it has been amended 105 times; the latest amendment became effective on 15 August 2021. The constitution's articles are grouped into the following parts: Preamble, with the words "socialist", "secular" and 'integrity' added in 1976 by the 42nd amendment Part I – The Union and its Territory – Articles 1 to 4 Part II – Citizenship – Articles 5 to 11 Part III – Fundamental Rights – Articles 12 to 35 Part IV – Directive Principles of State Policy – Articles 36 to 51 Part IVA – Fundamental Duties – Article 51A Part V – The Union – Articles 52 to 151 Part VI – The States – Articles 152 to 237 Part VII – States in the B part of the first schedule (repealed) – Article 238 Part VIII – Union Territories – Articles 239 to 242