on weekdays
Siempre está ocupada entre semana.
She's always busy during the week.
Entre semana trabajo, pero los fines de semana descanso siempre.
I work during the week, but I always rest on weekends.
La tienda abre hasta las diez de la noche entre semana.
The store is open until 10 pm on weekdays.
Entre semana, éramos Ozzie y Harriet.
During the week, we were Ozzie and Harriet.
— El club de la lucha (1999)