Roughly 10:09:38 seconds shows practically every element on the face of most watches as clearly as possible (all hands, branding under 12, verbiage at 6, date windows at 9, etc.), while still having the hands in an upward, “perky,” position. Thus “happy face”
Other positions permitting similarly good views of the dial are possible, but would have the hands pointed downward in a “gloomy” position. A “sad face.”
As I understand it, brands have internal guidelines for their specific photography and display time, all roughly around 10:10 give or take.
It appears Rolex’s corporate position is 10:10:31, including in the AM for a GMT hand where applicable!
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