The terminator line on the Death Star is clearly tilted at about thirty degrees, meaning that either the light must arrive from the extreme upper right side of the frame or the Death Star itself needs to be rotated thirty degrees clockwise in the frame to match the current sun location.

Of course, realistically the terminator line seems to be bisecting the sphere of the Death Star almost precisely in half, so there would be no way to view the sun in the same frame as the Death Star at this distance. as it would be far to the right of the moon.