Thanks everyone for the explainations. The waking up to darkness thing really makes sense to me!

Now, the only problem is to try to find a way to stop being so darn tired!

I have studying to do but I keep deciding to just go to bed. I'm not even sleepy. I need more energy or something. Now I have a bit of a headache, I think it is from sleeping too much.

I just hope tomorrow won't be like it was yesterday or today.