Hello, i am looking for advice on backtesting ES and NQ emini futures. I use Amibroker for backtesting. When bactesting w/ daily bars, what is considered the the Open and Close? On non-futures securtities, this is easy since the market opens at 9:30 and closes at 4pm. But for futures which can trade nearly 24 hours, what do most futures traders use as the open and as the close for a daily bar? any asisstance or suggestions would be greatly appreciated.