When do you start and end your days?

Most people my age either wake up around 8 am for morning classes or relax until 10 am whenever they can or later due to the late nights hanging out with friends or studying and catching up on classwork. My schedule fluctuates constantly since my time depends on EST instead of PST, where I reside. So my days sometimes start at 4 am or earlier and end anywhere between 9 pm to 11 pm. Today, was especially early since I have been awake since 2 am.

What do your work/study days look like? Have you ever juggled different time zones and, if so, how did you manage daily life?