Spanish Phrase
¿Qué día es mañana?
Meaning
The sentence asks for the name of the day of the week that will occur tomorrow. It’s a straightforward way to confirm plans, appointments, or simply satisfy curiosity about the calendar.
When to use
Use this phrase when you need to know the exact weekday for tomorrow—whether you’re arranging a meeting, checking a class schedule, or just making small‑talk about upcoming events.
✦Grammar Breakdown
Quédíaesmañana
Qué (interrogative pronoun)
Used to ask for specific information; it carries an accent to differentiate it from the conjunction 'que'.
día (noun)
Means 'day' and is masculine; when referring to a day of the week you usually add the article 'el' (e.g., el lunes).
es (verb ser, 3rd person singular)
The present tense of 'ser' used for identity or definition; here it links the subject 'día' with its value.
mañana (adverb of time)
Means 'tomorrow' (as a noun it can also mean 'morning'); context tells you it’s the temporal adverb.
🗨In Conversation
¿Qué día es mañana?
What day is it tomorrow?
Mañana es viernes.
Tomorrow is Friday.
✕Common Mistakes
Que día es mañana?
Missing the accent on 'Qué' changes it from a question word to a conjunction.
¿Qué día son mañana?
Use 'es' (singular) because 'día' is singular; 'son' would be for plural.
¿Qué día será mañana?
While grammatically correct, many learners overuse the future tense here; the present 'es' is more natural in everyday speech.
↔Alternatives
¿Qué día será mañana?
What day will it be tomorrow?
¿Qué día cae mañana?
What day falls tomorrow?
¿Qué día corresponde a mañana?
Which day corresponds to tomorrow?
Cultural Tip
In Spanish, days of the week are not capitalized (el lunes, el martes, etc.). When you answer, you normally include the article: 'Mañana es viernes.' Also, remember that 'mañana' can mean 'morning' in other contexts, so the surrounding words determine its meaning.