The days of the week in Sapanish are never capitalized like they are in English and it always starts with Monday. Here are the days of the week in Español with their meaning and pronunceation:
You also need to know how to tell someone what today is, or what tomorrow will be if they ask. Here is how:
Imagine your dad wanted to know what day today was and what tomorrow will be. You would need to know how to tell her the day of the week.