Why does es mean is and also now?

Question

Please tell me why es has two meanings? How do I know when to use it? It says is and now.

Answer 1

• Es = is

• Ahora = now

Answer 2

Why do you think it means now?

Answer 3

"es" is the third person singular conjugation of "ser", one of the verbs "to be". In my view, "es" means "he/she/it is".

I don't see how "es" could mean "now"