Maybe calorie restriction is important, but don't get stuck on the idea that your body has a calorie counter that it resets every 24 hours. Saying you need a deficit of so many calories PER DAY makes very little sense. I say this again and again: we are not machines. We have rhythms and cycles that ignore the spinning hands of the 24 hour clock.
If a daily caloric restriction were necessary then weighing yourself every day would also accurately reflect your progress, but it doesn't.
I think that if you're going to count calories, it's far more useful to do so over a span of a week than a day, which is also a useful interval to weigh yourself at. Maybe meeting monthly caloric requirements would be still more useful, I don't know.
You lousy kids! Get off my savannah!