college Time Table generator

I would like to create a custom time table for my college. application don in php but it does not have the type of time tables we use. The college operates on a six day cycle instead of assigning classes on a monday to friday basis. The days are counted excluding weekends and any public holidays. The first day of each school term/semester is the beginning of the cycle and it continues till last day of the term/semester. I would for the development to be carried out in the same application i already have