BBTime or Blood Bowl time is the official, timezone free, sitewide time system that enables all coaches to talk about time in the same way. When you post something, it shows up in BBTime.
If you are on IRC and type 'bb time', you get something like this:
neoliminal: bb time
[09:34am] Bowlbot: neoliminal: Mon Apr 01 17:34:30 CEST 2013
My local time is 09:34, but
BBTime is 17:34.
The importance of this is pretty big because now you can talk to people in other timezones and be sure that your time and their time are the same time, because you are both talking in BBTime.
For example I have an opponent in a tournament who is in the EU. He is telling me the times he can play and I need to figure out if they match the times I can play. I've made a little chart for myself to see what my local times are in BBTime.
This page can be helpful in figuring out overlap in timezones.
http://www.timeanddate.com/worldclock/meeting.html
There are a few caveats. For example BBTime does jump an hour in the summer since it's based on CET (UTC+1) and CEST (UTC+2). It just jumped a few days ago, for example.
It would be nice if there were an official clock on the website for BBTime to help people get the hang of it. FUMBBL Time or something. Maybe some adventurous admin will add the two lines of javascript and get it there.
In the mean time (no pun intended) you can always check out
http://www.timeanddate.com/worldclock/ to see the current CET and CEST times.
For the record, I keep a list of available times in BBTime on my profile page.
Enjoy.