Rearview mirror angle setting systems, methods, and programs display, on a display, a peripheral image of a vehicle that includes a visible region that is visually recognizable in a rearview mirror at a variable angle. The systems, methods, and programs display a reference point in the peripheral image, and move a position of the reference point in the peripheral image in accordance with a moving operation by a user. The systems, methods, and programs set the angle of the rearview mirror such that the position of the reference point, which has been moved, is visually recognizable in the rearview mirror.
