This is going to be a fun trip through the cosmos. Most Westerners don't even realize that the days of the week are already named after the planets.
Sun = Sunday
Moon = Monday
then it's easy to see if we convert to Spanish
Martes = Tuesday = Mars
Miércoles = Wednesday = Mercury
Juévez = Thursday = Jupiter
Viernes = Friday = Venus
Sábado = Saturday = Saturn
Nice. Got to learn spanish names.