im repainting and aircraft, right now i have all day textures ready; my question is:is there a program that convert all day textures to night or i have to make all night textures by myselft.

if you are using a gmax based a/c then the night textures should be automatic.If it is a FSDS based a/c then you need a program like photoshop and use the rendering options to do lighting effects.Clod

Not necceserallyThe way I make night masks for aircraft I paint when I dont have night masks is I cut a white ellipse out of a black background with a feather of about 20px. Then I use the Dprey Can and touch it up to make it look like a light