(UPD Graduate Students) Yung mga classes talaga ay mostly sa hapon or gabi?

I have been struggling with my classes as a graduate student. I am also working at night and barely attend my classes which adds to the feeling of being left-out and overwhelmed of how things are out of my control. My working schedule is conflicted with my classes, and I can't change anything as both are very relevant to me and leave me with no option. I have lots of free time in the morning until late afternoon, and then get ready to work. My question is, do all graduate classes have to be at night? Have you ever had one during the day?