I have windows getting direct morning sunlight on one side of our apartment, and direct evening sunlight on the other side. All windows have (wooden slat) blinds.
I was wondering: what is the best way to keep the inside of the apartment cool during hot summer days, and warm during cold winter days, just by using the windows and blinds, to avoid using energy-hungry devices? That should be achieved by opening and closing windows, and opening and closing the blinds, in order to control airflow and exposure to direct sunlight. Generalising for most homes would be great too.
Note: this is a rented apartment.