The screen is wiped in a similar matter as that of a clock face to indicate that time has passed.
Sometimes, when you're doing a project, it takes a lot of time, maybe even a few hours. In fiction, the best way to depict the passing of time is to have the screen become wiped in a similar matter as a clock face in order to indicate how fast time has passed. May fall under Idiosyncratic Wipes Compare Cartoonland Time See also Spinning Clock Hands
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