I'm trying to figure this out, but I'm finding that I'm unable to.

I'm trying to translate what time someone will be online...

This person lives in UTC + 1, and will be online 11 AM - 3 AM. What are those times in UTC + 0?

Thanks!

To convert an UTC+1 time to UTC+0, simply subtract 1 hour from the UTC+1 time so 11:00am in the UTC+1 time zone is 10:00am in the UTC+0 time zone.

Those times in UTC + 0 are: 10 AM - 2 AM

Use time and Date:

http://www.timeanddate.com/worldclock/

Try whattimeisit.com