In the past people have faith in education enrolment courses when the magic spell magic critical date, according to the belief of those who learn they will have to leave, "of", which in this case means the ghost witch spell or magic to try various subjects.
In the past, people have faith in the education of black magic by superstitious beliefs on the day of the class. It will be released, "of", which here means ghosts or black magic spells to try out a variety of subjects.
In the past there is a belief in the study of occult magic. When ถึงวันสำคัญ according to the beliefs of the school, it will be released. The "of", which here means the incantation, ghost, or magic.