Thai people believe in doing everything in good day and good time. They usually arrange their celebration at the time that they confer with the monk or the adept.

Most of Thai people believe in cut their hair in the good day. So there is the day that they don't like to cut their hair. That day is Tuesday and Wednesday. They believe that if they cut their hair on Tuesday, their enemy harm them. And if they cut their hair on Wednesday it's easy to have a problem with another persons.