El vocabulario
In Spanish the calendar week starts on a Monday which is different from when we start the calendar week in the United States. We start with the calendar week with Sunday.

lunes

Monday
martes

Tuesday
miércoles

Wednesday
jueves

Thursday
viernes

Friday
sábado

Saturday
domingo

Sunday

Days of the week song


La conversación:

¿Qué día es hoy?

-Hoy es lunes.