The studies I've read recently say that the time of day has no bearing on how the body burns calories.
If you figure the snacks into your calorie plan, I don't see a problem with them. I generally finish my relatively large supper (7-800 cals) within 2-3 hours of bedtime. So, I don't get a chance to get hungry again.
You could also go to bed earlier, if that is a "danger time" for you (as it is for me). Other studies have show that those who get more sleep tend to lose weight faster (somewhat counterintuitive, I know).
If you're not losing, you may need to rethink your calorie intake level, perhaps weigh/measure your portions for a while and/or bump up your activity level.
Let us know how things go.
47 M 5'8"
May 4, 2010...... 440? lbs. (Start FitDay Size 60 Jeans)
June 19, 2010.... 393 lbs. (First Weigh-in)
June 19, 2011.... 229 lbs. (164 lbs. gone in one year :-)
Current Weight... 185 lbs. (Size 36 Jeans)
Next Goal 169 lbs. (07/04/12)
Ultimate Goal 165 lbs. (12/31/12)
The best exercises for weight loss are Fork Putdowns and Table Pushaways.