As of 2015, the regular trading session of the National Stock Exchange of India begins at 9:15 a.m. and runs till 3:30 p.m., according to the NSE website. The pre-opening session is held from 9 a.m. to 9:08 a.m., and the closing session occurs between 3:40 and 4 p.m.
The NSE is open Monday through Friday, except for declared holidays. No trading occurs in January on Republic Day, in February on Mahashivratri, in March on Holi, and in April on Mahavir Jayanti or Dr. Baba Saheb Ambedkar Jayanti. The NSE is also closed for Good Friday and on Maharashtra Day in May. In September, the NSE is closed for Ganesh Chaturthi and Bakri ID, and in October, it's closed for Mahatma Gandhi Jayanti and Dussehra. The NSE remains closed in November for Diwali-Laxmi Pujan, Diwali-Balipratipada and Gurunanak Jayanti. In addition, the NSE is not open on Christmas Day, according to the NSE website.