Happy Librarian's Day of India

 Shiyali Ramamrita Ranganathan (S.R.R.)(12 August 1892 – 27 September 1972) was a librarian and mathematician from India.His most notable contributions to the field were his five laws of library science and the development of the first major faceted classification system, the colon classification.He is considered to be the father of library science, documentation, and information science in India and is widely known throughout the rest of the world for his fundamental thinking in the field. His birthday is observed every year as the National Librarian's Day in India.

S. R. Ranganathan
S. R. Ranganathan's Portrait at City Central Library, Hyderabad, Chennai
Born	Shiyali Ramamrita Ranganathan 12 August 1892 shiyali, British India (present-day Tamil Nadu, India)
Died	27 September 1972 (aged 80) Bangalore, India
Occupation	Librarian, author, academic, mathematician
Nationality	Indian
Genre	Library Science, Documentation, Information Science
Notable works	Prolegomena to Library Classification The Five Laws of Library Science Colon Classification Ramanujan: the Man and the Mathematician Classified Catalogue Code: With Additional Rules for Dictionary Catalogue Code Library Administration Indian Library Manifesto Library Manual for Library Authorities, Librarians, and Library Workers Classification and Communication Headings and Canons; Comparative Study of Five Catalogue Codes
Notable awards	Padma Shri in (1957)

He was a university librarian and professor of library science at Banaras Hindu University (1945–47) and professor of library science at the University of Delhi (1947–55). The last appointment made him director of the first Indian school of librarianship to offer higher degrees. He was president of the Indian Library Association from 1944 to 1953. In 1957 he was elected an honorary member of the International Federation for Information and Documentation (FID) and was made a vice-president for life of the Library Association of Great Britain.