So last night I took a fairly hard crash (almost 2!) due to the difficulty I had seeing the surface of the snow around 4:15pm.
I have to say I haven't skied right at twilight in quite some time, it's usually either fully daylite of fully dark with artificial light when I ski, and man was that tough to ski in.
I couldn't make out the undulations of the snow at all. The first black I took was throwing me all over the place and all I could do was hang on and get to the bottom.
As soon as it was fully dark it was super easy to see the surfaces again and everything was fine.
Anyone have any ideas on how to lessen this problem? My goggles tint did help some, but not a whole lot.