You can trade in below two Exchanges through TradingBells - IIFL. They are:

Timings for Commodity Markets - Monday to Friday

Trading on exchange platform takes place on all days of the week (except Saturdays, Sundays and holidays declared by the Exchange) Market timings are as follows:

Agri Commodities10:00 a.m. to 5:00 p.m.
Bullion, Metals, Crude Oil and Internationally linked Agri Commodities10:00 a.m. to 11:30 p.m.