ésta es la primera vez que

this is the first time that

→ este
phrase Rare #45,844
this is the first time that Introduces an experience happening for the first time. In modern Spanish, esta is usually written without an accent mark, but the exact term here retains the accent: ésta es la primera vez que.
SP: Ésta es la primera vez que visito Portugal.
EN: This is the first time I’ve visited Portugal.

Ésta es la primera vez que me he enojado en la vida.

This is the first time in my life that I’ve ever been angry.

Ésta es la primera vez que visito Portugal.

This is my first time visiting Portugal.

Ésta es la primera vez que estoy en Portugal.

This is the first time I've been to Portugal.

Ésta es la primera vez que sigo a alguien para saber dónde vive.

This is the first time I've followed someone to find out where they live.