Bank Nifty Expiry Supply and Demand Zones

Bank Nifty Closed in it's Minor Demand Zone @ 21300-21520.
If it will manage to sustain above this zone then next Supply Zone @ 21700-21880.
In any case if it will sustain below 21300 then Next Major Demand Zone @ 20650-20750.

I will take a short position below 21300.

Thank x
Trade Well :)