When do you go to sleep?

I go to sleep around 6pm or so.

Around midnight to 1am.

Or at least try to. I have chronic insomnia; I especially have problems getting to sleep on Sunday nights.

8pm.

Usually about 11 pm.

8pm or 11pm. If I want to be well rested then 8pm.

Around 10 or 11 pm.

until I'm sure that I'm done ,hopefully before 12 - 1:00 AM

No set time just when I am tired.

1-2 am (CET).