I'm only available between 10am and 4pm. I had to do this, because of the different timezones as well as people wanting to work after their own office hours, which would mean their work with me sometimes started at 7pm my time. And, I still get the occasional 6:30 am phone call for a screenshare session on demand, because it's 8:30 am where they are, and they just realized they had a question I have to answer Now.

I do remember the one person that I thought was in Pacific timezone as Costa Mesa. She turned out to be in Costa Rica. Oops.