I think the spelling of your question should be ¿Dónde está Juan Carlos? (no 'h' in 'Carlos' in the usual Spanish spelling).It means 'Where is Juan Carlos?' or 'Where is John Charles?'
¿dónde estás? means where are you?
hola donde estas
'Donde estas ahora' = Where are you now
Where is the big chicken
Por favor. ¿Me puedes decir donde esta esta calle?
You mean in English? "Where is the table?"
Where this all the hynas
Listen, where is the love.
IT CAN BE TRANSLATED TO ENGLISH AS FOLLOWED. She has the pencil.
Donde esta mi amigo. Put accents on the o in donde and the a in esta
Donde esta el bano? Donde esta=where is el bano=the bathroom