Although you sometimes to be precise when talking about times, often an approximation will do. Thus, at the most basic, we can talk about la mañana (morning), la tarde (afternoon or evening) and la noche (night).
Here, roughly in ascending order, are some other common words or phrases for times of the day, including the prepositions that are often used with them:
- muy de la mañana early morning
- por la mañana temprano in early morning
- al amanecer at dawn
- de madrugada at dawn
- a la hora de desayunar at breakfast time
- por la mañana in the morning
- a media mañana in midmorning
- a mediodía, al mediodía at noon, in the middle of the day
- a la hora de almorzar at lunchtime
- a la hora de comer at mealtime, at lunchtime
- a la hora de merienda, en la merienda at tea time, in midafternoon
- de día in the daytime
- durante el día in the daytime
- por la tarde in the afternoon or evening
- al anochecer at dusk
- al atardecer at dusk
- a la hora de cenar at dinnertime
- por la noche, por las noches at night, in late evening
- de noche at night, in the late evening
- a la medianoche at midnight
- Somos un poco más altos por la mañana que por la noche. We're a little bit taller in the morning than late in the day.
- El euro sube hasta 1,25 dólares a mediodía. The euro climbed to $1.25 at noon.
- ¿Qué frutas debo comer durante el día para tener energía? What fruits should I eat during the day in order to have energy?
- La tarde comienza con el mediodía y termina al atardecer. The afternoon or evening begins at noon and ends at sunset.
- Una siesta por la tarde podría mejorar su inteligencia. A rest in the afternoon could improve your intelligence.
- Al llegar a Nueva York a la medianoche, voy a viajar a Washington. After arriving at New York at midnight, I'm going to travel to Washington.

