Oh, I guess it is rather difficult for western people to understand the difference between the old Chinese lunar calendar and the current calendar. In fact, it also took me--a native Chinese a long time to figure it out. I remember when I was a child, I was always very puzzled about it. It seems that there is a two-calender system in both China and Japan. And in China the old lunar calendar is normally used in the traditional/ancient festivals like Japan, such as Mid-Autumn Festival which falls on the eighth month of Chinese lunar calend, instead of August 5th.

All in all, very glad to learn about the interesting Japanese mythology! Thank you for your sharing it so much.