Originally Posted by
McQ
Mark, Donald, Nick & Trace: thanks for the feedback -- it's really appreciated! Nick: yes, I should probably also mention the influence of dust/haze and its asymmetry with sunrises and sunsets. I'll also add something about the advantages of (bright) overcast light for colors and close-up work.
This will be addressed once the sunset/sunrise/twilight calculator is up and running. I didn't want to get too much into location-specific considerations without a way for people to easily see how this applies to wherever they are.