If $$1$$ August falls on Monday, which day of the week will $$12$$ September fall on?  Below is Chris\textquotesingle~answer.  Number of days from 1 Aug to 12 Sept: 31 + 12 = 43  43 $\div$ 7 = 6 R 1  Hence, 12 September is a Tuesday.  Is Chris\textquotesingle s answer correct? If not, what is the correct answer? ． 
Overseas Competition->Knowledge Point->Word Problem Modules->Periodic Problems->Periodic Problems of Time
Number of days from $$1$$ August to $$12$$ September  $$=31+12-1$$  $$=42$$  $$42\div 7=6$$ weeks  Therefore, $$12$$ September will fall on \textbf{Monday}. 