Question

1. between 12:01 a.m. and noon, we add de la mañana to the time to indicate a.m.
2. between 12:00 noon and nightfall, we add de la tarde to indicate p.m. from nightfall to midnight, we add de la noche to indicate p.m.
3. noon is mediodía; midnight is medianoche.
4. in spanish - speaking countries, it is actual darkness that determines whether the afternoon has ended. thus, if there is still light in the sky, 7:30 p.m. will be expressed as \las siete y media de la tarde\

Explanation:

The text explains Spanish - language time - related expressions. It details how to indicate A.M. and P.M. in Spanish, the Spanish words for noon and midnight, and how darkness affects time expressions in Spanish - speaking countries.

Answer:

It provides rules for time - related Spanish vocabulary and expressions.