I work from Poland. In my previous job I participated in a number of projects. I would typically do some hours within my "normal" working hours but then have those strange meetings. For example, one regular meeting was at 1AM my time which was when the project team would meet -- half of it was US, half of it was China.

Generally meeting anybody from West Coast meant I had to stay late, for some reason I was never able to organize meeting that would have more than one US West Coast person come early to work