Lunes – Monday
Martes – Tuesday
Miércoles – Wednesday
Jueves – Thursday
Viernes – Friday
Sábado – Saturday
Domingo – Sunday
El fin de semana – the weekend
In Spanish, days of the week are not capitalized: lunes, martes, etc. All of them are masculine. In order to make them plural, we just use the plural article (el martes, los martes), except for sábado and domingo: el sábado, los sábados; el domingo, los domingos.
