This happens to me all of the time on work days. I don't get home until 8 or 8:30 so i have my treat at 5 while still at work dinner at 8:00-8:30...bed at 11. Thnakfully i only work one or two long days a week!
And if you have your snack as your later time after dinner, then technically, you can choose one of Jorge's "sugar" snacks and have dessert.
I'm now hooked on sugar free jello - I've been eating the entire box - only 40 calories!