Book Day is observed in Tajikistan every September 4, commemorating the founding anniversary of the National Library of Tajikistan, which officially opened its new building in 2012. This date marks the laying of the cornerstone for the library in 2007, as declared by President Emomali Rahmon. The National Library serves as the largest repository of manuscripts and printed works in Tajik and Persian, reflecting the rich heritage of Tajik literature, which has roots in classical Persian literature. Celebrations on Book Day include various events such as book exhibitions, poetry readings, and discussions held at public libraries and bookstores across the country. The day highlights the importance of literature and promotes the development of book publishing in Tajikistan, supported by state funding.