morning or evening ?

on my own opinion, i think it's better to study in the morning where you still have enough energy for the day. in the evening, you tend to be sleepy and your brain waves are not that much active as during the day so there's a possibility that after reading a couple of lines, you'll be at your bed sleeping and waste the opportunity to study. unlike during morning, after you wake up and freshen up, there's a whole lot of time to read and study^^

My preference is late night :)