I was thrilled to get a sunrise and moonset at the same time. the place I was at literally gave me views of both occurring simultaneously.
Once i finished with my sunrise long exposures, i turned my attention the moonset behind me so that I didnt lose it as it was going pretty quickly.
This was a stacked image using the luminosity mask method I read about online.
D800e
85 1.4G
stacked images with luminosity masks.