Sunshine v/s Saturnshine on Mimas (Natural Colors; credits: Lunar Explorer Italia)

Caption NASA:"The transition from light to dark takes place on two fronts in this image of Mimas. The two Terminators that stretch across the moon are created by Sunshine across the North and Saturn-shine in the East.
This view looks toward the Trailing Hemisphere of Mimas. North on Mimas is up and rotated 33° to the right.

The image was taken in Visible Light with the Cassini Spacecraft narrow-angle camera on Jan. 23, 2009. The view was acquired at a distance of approx. 508.000 Km (about 316.000 miles) from Mimas and at a Sun-Mimas-Spacecraft, or Phase, Angle of 152°.
Image scale is roughly 3 Km (a little less than 2 miles) per pixel".