The sabbath of the undead was a day when Satan's power was at its greatest and one of his minions, demon or human, would be more likely to cause havoc. Indeed, according to Lorrimer Van Helsing it was the cause of both world wars. In 1974, Count Dracula attempted to use this day to launch his lethal virus, which would have wiped out all of humanity. It was the time when the forces of darkness were at their greatest - even more so than the Witches sabbath.