This is a celebration during which the people of Israel lived in temporary shelters for seven days as a way to remember the time they spent living in the wilderness after they left Egypt. See how you translated it in [Leviticus 23:34](./34.md).
This is the seventh month of the Hebrew calendar. The fifteenth day is near the beginning of October on Western calendars. (See: [[rc://en/ta/man/translate/translate-hebrewmonths]] and [[rc://en/ta/man/translate/translate-ordinal]])