It's celebrated to commemorate the dead, just like the Day of the Dead.
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Well, if they come out for Hallowe'en, then they probably come out for the Hungry Ghost Festival as well.
The Ghost Festival
yup
The lantern festival origionates from China
As a festival in honour of the god Zeus.
yup
The Hungry Ghost Festival.
The Holy Ghost, also known as the Holy Spirit, is believed to originate from God in Christian theology. It is considered to be a part of the Holy Trinity, along with God the Father and God the Son (Jesus Christ). The Holy Ghost is seen as the presence of God in the world and in the lives of believers.
Cape Town, South Africa
There is no such thing in Judaism.
In the Chinese calender, the Ghost Festival is on the 15th night of th seventh lunar month.