Is it bad to have a strict diet on weekdays and eat unhealthy on weekends?

I eat healthy on weekdays and resist all the unhealthy foods, but on weekends I like to go out to eat. I typically don’t eat nothing but I get from going out on weekends (because I don’t want to go over my calorie limit) sometimes I go over it a little but not much.. (on weekends I eat 1300cals-1800cals on weekdays I try to eat 800cals-1300cals) I’m in a calorie deficit on weekdays only.

Is this bad? Is it just throwing away my progress that I did on the weekdays?

Is it bad to have a strict diet on weekdays and eat unhealthy on weekends?
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