@patience90.

Does it mean that good morning market only opens in the morning hours alone or why is it called as such?

(Hahahaha) That name good morning market even amuses me, and I even asked the same question as you the very first time I heard that name good morning market. That's just the name, but for a fact they start very early in the morning, while most people are still snoozing in bed. I appreciate your time in reading my post. Best wishes