When the summer goes to its rest and ghostly spirits run free, along with witches, fairies and goblins. The souls of the dead (especially of family ancestors) were believed by many cultures to be roaming about.
In earlier times, fires were lit to drive off daemons: and on no account were household fires allowed to go out that night, or evil things might gain an entry. Incidentally, if your fire flame turns blue, it’s said that an other-worldly being has entered the room.
A time to remember the dead, including Ancestors, The Beloved Dead, and Familiar Spirits. Burn to honour yours and to bring protection to your household on this dark night.
Limited when they are gone they are gone.