At what time do traders windup the day?

Usually 3:41, but sometimes 4:00, in case of pending orders.

This is what happens with me.

Once my BUY/SELL cycle is complete for the particular trading day, no fixed time as such.

tks Bro.very help full

3:41 is just because of some aftermarket orders (for doing BTST or just squaring off a previous CNC trade of the day as MIS, if closing prices are favorable). Cheers!

what is that BUY/SELL cycle?

I think he says, that he will wind up when all his entry orders for intraday are squared off and closed, he would wind up.