Here's how you can answer:
1. Specific Time:
* "El almuerzo es a la [time]" - "Lunch is at [time]"
* Example: "El almuerzo es a la una de la tarde." (Lunch is at 1 pm)
2. General Time:
* "El almuerzo es a la hora de la comida." - "Lunch is at lunchtime." (This implies it's around noon or 1 pm)
* "El almuerzo es a las [hour] más o menos." - "Lunch is around [hour]." (This is more flexible)
* Example: "El almuerzo es a las doce más o menos." (Lunch is around 12)
3. If you don't know the exact time:
* "No lo sé, ¿a qué hora almuerzas tú?" - "I don't know, what time do you eat lunch?"
* "No estoy seguro, pregunta a [name]." - "I'm not sure, ask [name]."
4. To indicate that lunch is about to start:
* "El almuerzo va a empezar pronto." - "Lunch is about to start soon."
* "Ya es hora de comer." - "It's time to eat."
Remember to use the appropriate form of "ser" (to be) based on the time:
* "es" for singular time
* "son" for plural time (e.g., "Las dos" - two o'clock)
The best answer will depend on the context and what you want to convey.