Of course, be aware of time zones when making international calls, but also think about the schedules of those on the other end of the phone. For example, between noon and four in the afternoon, there is not a lot of communication that’s going to happen in countries like Portugal, Spain, and Italy, which tend to shut down for a few hours after lunch.

Helpful hint: Keep local scheduling customs in mind for your meeting agenda as well. When in Mexico City, chances of locals showing up for a 7 p.m. dinner are slim to none, since they normally wouldn’t think of eating until at least 9 p.m.