Not October. You mean the fifteenth day of the seventh lunar month. July 15th in Hunan is Ghost Festival. On the tenth day of July, please take your ancestors back, feed them every day, and then send them away on the fifteenth of July.

Some places also have the custom of sweeping graves, but it is not a necessary item.

When you say 10 month, it should just catch up with July 15 of a certain year. Normal should be August and September in the solar calendar. Or you can't remember clearly.