To ask " What time is it?", you say "¿Qué hora es?"
I am, You are, is, and are
When to use the different types of words
You say yo estoy when you are feeling something. You say yo soy when anywhere else.
You say tu eres when you are talking to someone around your age/non-formal. You say Tu estás with someone older than you/formal.
You say es in any situation that isn't where something is. Only use está when you are saying where something or someone is.
Only say son when you are not saying where something is. Only say están when you are talking about where something is.