All Souls Day?

Some Religious groups don't celeberate All Souls day. It's not written in the bible. There is no such thing as All Souls day. Sorry but that is the truth. According to the Roman Catholic doctrine, All Souls' Day commemorates the faithful departed. This day is observed in the Roman Catholic Church, churches of the Anglican Communion, Old Catholic Churches, and to some extent among Protestants. The Eastern Orthodox Church observes several All Souls' Days during the year. The Roman Catholic celebration is based on the doctrine that the souls of the faithful which at death have not been cleansed from venial sins, or have not fully atoned for mortal sins, cannot attain the beatific vision in heaven yet, and that they may be helped to do so by and by the sacrifice of the Mass.

Is there any prof that this event exist in the past days? Even before the Christ was born? I'm sorry to all my fellow christians, but I think this is the truth. Good luck to all. Happy weekend!