Let’s look at a few factors to answer this.
The first thing to look at is the RMR or the Resting Metabolic Rate.
Research has shown that your RMR when you are asleep versus when you are awake is equivalent.
What does this mean?
Metabolically, there is no difference in terms of when you eat your carbs.
Now another idea is that your insulin sensitivity is much lower in the evening.
However, this does not mean that eating at night is necessarily bad.
Studies have demonstrated that insulin sensitivity just peaks before the first meal, and not that it is poor in the evening.
In terms of fat loss, body composition is determined by a net caloric deficit in a 24-hour time period or longer.
This is what drives the changes.
I would focus on finding an eating schedule that works best for you.
It will not hinder your fat loss if you eat your carbs at night.
Personally, my appetite peaks at night.
For that reason, I save the majority of my calories and carbs at night.