You made my day.
you say: "alegraste mi dia"
"Hoy no es mi dia" means "Today is not my day."
Say 'mi dia siempre es mas brillante cuando estas tu'
my birthday
Mi dia era bueno.
"Mi momento favorito del dia" = My favorite moment of the day / my favorite time of day.
Mi dia estuvo agitado
These phrases translate to: "Mi día va bien" --> My day is going well. "Qué tal tu día" --> How is your day.
The Spanish phrase "mi primer dia sin ti" means my first day without you. This is a literal translation and could be interpreted in several different ways.
very good, my love
It means, "My favorite day is..."
Por supuesto que NO!