it means: think about spending an afternoon or a night with this cute guy (or, cute dude).
Te llamo esta tarde*/noche** = I'll call you this evening/tonight *earlier **later If you meant: 'Call me tonight': 'Llamame esta tarde/noche'
Las nueve de la tarde/noche
Pasa usted una tarde/noche agradable (depending on how late)
esta tarde (if early evening)esta noche (if later)
You would say "de la tarde" or "de la noche".
"Do you sleep during the afternoon or at night?"
La tarde (also 'afternoon') for early eveing La noche for late evening
son las cinco de la tarde/noche
The Spanish word for "night" is "noche." In order to refer to the evening, the word "tarde" may be used.
Las siete y veinticinco de la noche (or 'de la tarde')
If you mean 'the afternoon' (and not, e.g. Prime Minister), there is no abbreviation in Spanish, only 'de la tarde' (= 'the afternoon'). Thus 3p.m. = las tres de la tarde Later on, say after 10p.m., it becomes 'de la noche', e.g. 10p.m. = las diez de la noche
Salí en once por la noche: I went out at eleven at night Usted salió en once por la noche : You went out at 11 at night Evening: tarde Morning:mañana