Ordinarily, this only occurred on the eve of the total moon. So the best time to visit Hoi An was throughout the entire moon. With the event of tourism in Hoi An, this now happens on a nightly basis, so every single day is the best time to go to! https://spencerfihhf.onesmablog.com/how-hoi-in-an-can-save-you-time-stress-and-money-80487651