Can one sell nifty and banknifty futures/options today at closing hours and buy the next day?
Yes. You can. Position will consider as Delivery. You can check the margin requirement in Span calculator.
Yes, of course you can sell (short) today evening and buy (cover) the next day. It won’t be considered intraday. It will be NRML/IOC order.
Yes, You can very well do it, if you have sufficient margins to take overnight positions on index as well as stocks.
Vamsi, there is nothing called delivery while trading F&O, the word used is overnight positions.
oh, Sorry for that.