VERBAVIA

Days of the week in Spanish: lunes to domingo

The days of the week in Spanish are lunes, martes, miércoles, jueves, viernes, sábado and domingo. They are written without a capital letter, they are all masculine, and the week starts on Monday. Five of them are named after the Moon and four planets, and in Spanish film and television dialogue the one said most is viernes.

Updated 14 October 2026 · 3 min read

The seven days

EnglishSpanishSay itNamed afterPer million words
MondaylunesLOO-nesthe Moon (Luna)35.6
TuesdaymartesMAR-tesMars (Marte)25.8
WednesdaymiércolesMYER-ko-lesMercury (Mercurio)20.7
ThursdayjuevesHWEH-besJupiter (Júpiter)26.0
FridayviernesBYER-nesVenus46.8
SaturdaysábadoSAH-ba-dothe Sabbath40.5
Sundaydomingodo-MEEN-go"the Lord's day"39.6

The last column is how many times the word is said per million words of Spanish subtitles.

Two sounds to watch. The j of jueves is a rasp at the back of the mouth, like the ch of Scottish loch, not an English j. And v in jueves and viernes is said like a soft b.

Where the names come from

The Romans named the days after the Sun, the Moon and the five planets they could see, which carried the names of gods. Spanish kept five of the seven. The Real Academia's dictionary traces lunes to Latin for "day of the Moon", martes to "day of Mars", miércoles to "day of Mercury", jueves to "day of Jupiter" and viernes to "day of Venus".

The weekend was renamed by religion. Sábado comes through Latin and Greek from the Hebrew shabbat, and domingo from Latin dominicus, "of the Lord". English went the other way and kept Saturn's day and the Sun's day.

The planets are easy to see once you know them: martes and Mars, miércoles and Mercury, jueves and Jove, viernes and Venus. French and Italian have the same five, so learning one set gives you most of the other two: French, Italian.

How to use them

Which day do Spanish films say most?

Viernes, at 46.8 per million words, ahead of sábado and domingo. Miércoles is last at 20.7, less than half as often. Of the days from Monday to Thursday, Monday is mentioned most.

That pattern is not special to Spanish: Wednesday is the least-mentioned day in all six languages we counted, and Friday leads in four of them. The comparison is in which weekday films mention most. Miércoles has one other use worth knowing: the Real Academia records it as a polite stand-in for a ruder word that begins the same way, much as English says "sugar!".

Learn them in a sentence

The days are in the most common Spanish words, and the Spanish course, Verbavia (our own course), teaches them with dates and times, free on the web. Counting comes next: numbers 1 to 100 in Spanish.

Sources

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