Strong Demand Zone in Bank Nifty which I am looking at

-- Bank Nifty weekly closed below it’s demand zone 17500-18100. On the downside next demand zone @ 15500-16300. 15500-16300 is a very strong demand zone on weekly as well as on the monthly chart.
-- If Bank Nifty will sustain below 17500 then it may test this major zone also i am not seeing bank nifty below 15500-16300.

Intraday Supply and Demand Zones. tgram a t swapniltradingroom