It passed $$31-10 + 21 = 42$$ days in total. Since $$42 \div 7 = 6$$, it was Sunday. 
Joann\textquotesingle s birthday in $$2020$$ was May $$10$$\textsuperscript{th}, which was Sunday. Elizabeth\textquotesingle s birthday in $$2020$$ was June $$21$$\textsuperscript{st}. On what day did Elizabeth\textquotesingle s birthday fall? 
a: Thursday 
b: Saturday 
c: Sunday 
d: Tuesday 