Traditionally, this only occurred to the eve of the entire moon. So the best time to go to Hoi An was during the comprehensive moon. With the event of tourism in Hoi An, this now happens on a nightly basis, so each day is the best time to go to! https://jaidenptuts.dgbloggers.com/40143309/5-tips-about-hoi-in-an-you-can-use-today