I have a specific time at night that is my "no eating after" mark. If I start getting the munchies or start wanting to pick at food out of boredom, I usually grab something to drink instead. Water or tea (hot or cold) usually since part of the point for me is to not needlessly consume extra calories. I find that by sipping at something it gives me something to do other than seek food.

I also sometimes do a mini workout at night to fill in the hours. Nothing high intensity, just some light work with a kettlebell or hand weights, some squats or lunges. If you're working you aren't eating is my philosophy.

I don't have a specific time that I quit eating. If I'm truly hungry, I eat, and I don't care if it's midnight. I just watch what I eat. I try to eat enough at dinner that it will keep me from getting the munchies later, but I also make sure that I leave enough calories open so if I am hungry I can eat a piece of fruit, or something with protein in it. I find the protein lasts longer, and prevents further eating. Peanut butter usually does the trick, and I eat it out of a measuring spoon (Tbsp). I eat one, then wait to see if that did the trick. I do think however, that next time I go to the grocery store I might try some of the Almond Butter instead. I LOVE almonds. And, if I don't eat anything else, it just adds to my deficit for the day.

But that is how I do it, everybody is different.