Answer:
Tomorrow is Tuesday. What day is today?
Step-by-step explanation:
"Mañana Es" means "Tomorrow is" and "Martes" means "Tuesday". So "Mañana es martes" means "Tommorow is Tuesday"
"Que dia es hoy" means "What day is today?"
So "Mañana es martes. ¿Qué día es hoy?" means "Tomorrow is Tuesday. What day is today?"