I graze at night because I'm bored and don't have many friends.
I have low-level depression and no activity seems interesting to me. I try to do little things like read a chapter from a book or watch a favorite TV show or call the friends I do have. I go to a lot of OA meetings. That keeps me from eating for an hour. I go to several OA meetings for nighttime eaters. Go to OA.org and look at the schedule. They're on Tuesday and Thursday night.
Most of my overeating occurs from 6 p.m. to 12 p.m.. I don't have the urge while I'm working because I'm busy and preoccupied.