On A Specific Day
When you want to say "On Monday....", you have to use a little word in front of the day of the week in Spanish. That little word is "el". See if you can accurately say the following. Click on each one to see if you are correct.

On A Weekly Basis
When you say you do something on a weekly basis, we say “los” +  day of the week

Notice: We add an -s on the Spanish word for Saturday and Sunday  (sábados and domingos).   

On Tuesday el martes
On Wednesday el miércoles
On Thursday el jueves
On Friday el viernes
On Saturday el sábado
On Sunday el domingo

On Tuesdays los martes
On Wednesdays los miércoles
On Thursdays los jueves
On Fridays los viernes
On Saturdays los sábados
On Sundays los domingos