Typically, this only took place over the eve of the entire moon. So the best time to go to Hoi An was during the full moon. With the event of tourism in Hoi An, this now happens with a nightly foundation, so everyday is the best time to go to! https://alexisrtyux.amoblog.com/helping-the-others-realize-the-advantages-of-hoi-in-an-61489333