Why is there big discount in Coalindia march futures? Any reverse arbitrage opportunity?

Coal India generally gives a Rs 20 dividend during March every year
Market is factoring that in.
The arbitrage opportunity will only work after the announcement of the dividend I guess, when Equity discounts it

See different between two future of feb and mar …close above 22…:+1::+1::+1:

Yea… this one did’nt work… I had exited on Monday with -6k and then reversed it to recover around 3k…