When you refer to the days of the week you use the articles el (singular), los (plural) which usually mean "the", but when referring to days they mean "on".
Jugáis al póker los lunes.
You all play poker on Mondays. Mi tío llega el viernes.
My uncle arrives on Friday. Los sábados voy al gimnasio.
On Saturdays I go to the gym. No voy a la escuela el domingo.
I don't go to school on Sundays.
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Dialogue Click to start or stop audio Yo trabajo el lunes.
I work on Monday. Mi hijo llega el martes.
My son arrives on Tuesday Mi hija parte el miércoles.
My daughter leaves on Wednesday. Mi esposo parte el jueves.
My husband leaves on Thursday. Mi mamá llega el viernes.
My mom arrives on Friday.
Dialogue 2 Click to start or stop audio Jessica: ¡Hola Joselito!
Hello Joselito! Jessica: ¿Sabes los días de la semana?
Do you know the days of the week? Joselito: ¡Por supuesto!
Of course! Joselito: Lunes, martes, miércoles, jueves, viernes, sábado y domingo
Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, and Sunday. Jessica: ¿Tienes agenda?
Do you have a personal schedule? Joselito: No, pero mi hermana Betania, sí.
No, but my sister Betania does. Joselito: Todas las semanas ella escribe en su agenda
Every week she writes in her personal schedule.
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