Answer:
If you're asking about the schooling hours in Singapore, it'll have to depend on what is your level of education.
For primary schools, schooling hours are usually from 8 to around 12.30 or 1pm.
For secondary schools, 7.45- 2pm. After that, there may be extra lessons or co- corriculum activities.
For JCs or Poly and university, it'll have to depend on the courses and subjects taken.