Mi turno empieza a mediodía.

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Breakdown of Mi turno empieza a mediodía.

• el mediodía: the midday
• empezar: to start
• a: at

Questions & Answers about Mi turno empieza a mediodía.

Does turno mean my work shift or my turn in a queue?

Both are possible. In Spain, turno commonly means a work shift. It can also mean “turn” in a sequence (e.g., Es mi turno = “It’s my turn”). In your sentence, Mi turno empieza a mediodía, context points to a work shift. If you want to be crystal clear, you can say mi turno de trabajo. For on-call shifts (doctors, police, etc.), Spaniards also use guardia (e.g., Tengo guardia).

Why is it mi and not mío?

Mi (no accent) is the unstressed possessive adjective used before a noun: mi turno.
Mío (with accent) is the stressed possessive pronoun/adjective: El turno es mío (“The shift is mine”).
Note also mí (with accent) is the pronoun “me” after prepositions: para mí.

Why empieza and not empiezo?

The subject is mi turno (third-person singular), so the verb must be third-person: empieza. If you make yourself the subject, you’d say Yo empiezo mi turno a mediodía.

Is empezar irregular? How do I conjugate it?