Spanish Days of the Week

The Week - La Semana

 lunes - Monday

 martes - Tuesday
 miércoles - Wednesday
 jueves - Thursday
 viernes - Friday
 sábado - Saturday
 domingo - Sunday
 la semana - the week

Unlike in English, the days of the week in Spanish are normally notcapitalized.

Most of these names end in -es, in which cases the singular and plural forms are one and the same; for example lunes means both “Monday” and “Mondays”. Therefore, to distinguish between “on Monday” and “on Mondays”, it is necessary to use the definite article - el or los.

Tengo muchas citas el martes, pero nada el miércoles.
I have many appointments on Tuesday, but nothing on Wednesday.

Vamos a servicios religiosos los sábados o los domingos.
We go to religious services on Saturdays or on Sundays