Online trade shows
There is no relevance to the close of a 1, 5 or 15-minute candle. Therefore, we are watching for these signals in real-time, and as soon as we see an engulfing pattern with the proper setup we trade it, without letting the bar complete.
Therefore, stock traders may opt to let daily bars complete. Intra-day bar timed bars, in all markets, are arbitrary. If day trading, I always trade a pattern as soon as I see it, and dont wait for bars to complete.