Special Session:
Monday to Saturday: 9:45 a.m. to 9:59 a.m.
Special Session (order cancellation session) is held to cancel the pending orders prior to opening of market

Normal Session:
Monday through Friday: 10:00 a.m. to 11:30 p.m.
(up to 11:55 p.m. on account of day light savings typically between every November and March of the following year)

Saturdays: 10:00 a.m. to 2:00 p.m.
Agri-commodities are available for futures trading up to 5:00 p.m. whereas non agri-commodities (bullions, metals, energy products) are available up to 11:30 pm / 11.55pm.