Spanish Phrase
Ayer fue domingo.
Meaning
The sentence tells the listener that the day before today was Sunday. It is a simple statement of fact about a specific point in the past.
When to use
Use this phrase when you are recounting events, answering a question about the previous day, or setting the timeline for a story that happened yesterday.
✦Grammar Breakdown
Ayerfuedomingo
Ayer (adverb of time)
Ayer means 'yesterday' and is placed at the beginning of the sentence to set the time reference.
fue (preterite of ser)
fue is the third‑person singular preterite form of ser, used for a completed fact in the past.
domingo (day of the week)
domingo is a masculine noun meaning 'Sunday'. In Spanish, days of the week are written in lowercase unless they start a sentence.
🗨In Conversation
¿Qué día fue ayer?
What day was yesterday?
Ayer fue domingo.
Yesterday was Sunday.
✕Common Mistakes
Ayer estuvo domingo.
Use 'fue' (preterite of ser) for a fixed point in the past; 'estuvo' is the preterite of estar and sounds unnatural here.
Ayer fue Domingo.
Days of the week are written in lowercase in Spanish unless they start the sentence.
Ayer es domingo.
Present tense 'es' does not match the past time reference introduced by 'ayer'.
↔Alternatives
Ayer era domingo.
Yesterday was Sunday.
El día de ayer fue domingo.
The day before was Sunday.
Ayer cayó domingo.
Yesterday fell on Sunday.
Cultural Tip
In Spanish, the names of the days of the week are not capitalized unless they begin a sentence. When you want to describe a habitual or ongoing past situation, you would use the imperfect (era) instead of the preterite (fue). For a single, completed fact—like the day of the week—fue is the natural choice.

