For several months now, you understand that parents are home for the weekend, and kids can stay with them instead of going to daycare.
Last night for the first time you mentioned that today is Saturday. Your dad had told you that it was Saturday, and you seem to have grasped the idea.
I told you that tomorrow would be Sunday. So, I guess you are taking your first steps to understand the concept of the days and weekdays and their names.
You, very adorable little girl.