In English, all days of the week start with a capital letter. The week officially starts on Monday. Use "on" before a day: on Monday, on Saturday.
Monday
/ˈmʌn.deɪ/
lunes
I work on Monday.
Tuesday
/ˈtjuːz.deɪ/
martes
The class is on Tuesday.
Wednesday
/ˈwenz.deɪ/
miércoles
We meet on Wednesday.
Thursday
/ˈθɜːz.deɪ/
jueves
It rains on Thursday.
Friday
/ˈfraɪ.deɪ/
viernes
School finishes on Friday.
Saturday
/ˈsæt.ər.deɪ/
sábado
I play football on Saturday.
Sunday
/ˈsʌn.deɪ/
domingo
We rest on Sunday.
Useful words
today
/təˈdeɪ/
hoy
yesterday
/ˈjes.tə.deɪ/
ayer
tomorrow
/təˈmɒr.əʊ/
mañana
weekend
/ˌwiːkˈend/
fin de semana
at the weekend
weekday
/ˈwiːk.deɪ/
día de la semana
every day
/ˈev.ri deɪ/
todos los días
Capital letters!
In English, days always have a capital letter: Monday ✓ — monday ✗. Also: "on" Monday (not "in" or "at"). At the weekend (British English) = on the weekend (American English).
Exercise — Which day?
Choose the correct day.
1. The day after Sunday is…
2. The day before Saturday is…
3. "miércoles" in English is…
4. Which preposition? "I have class ___ Tuesday."