You rarely see a clock at the airport, even though most people at the airport is very interested in what time it is because they have a plane to catch. (I’ll concede that people who just finished the last flight of their trip might not care.)
Which is to say that clocks are integrated into the most salient signage furniture.
The pervasive televisions also show signage, and at ticket desks there are often clocks which show international time in major destinations.