On 8th Dec, 2007 Saturday falls. What day of the week was it on 8th Dec. 2006?

### Concept & Calculating Backwards When moving backwards in time by exactly one ordinary year, the day of the week shifts backwards by 1 day because an ordinary year has 1 odd day. ### Step-by-Step Solution - We need to find the day of the week for December 8, 2006, given that December 8, 2007, was a Saturday. - The year 2006 is an ordinary year (not divisible by 4), which contains 365 days. - Moving from December 8, 2006, to December 8, 2007, crosses exactly one ordinary year, resulting in 1 odd day forward. - Therefore, going backwards, we subtract 1 odd day. - Saturday - 1 day = Friday. ### Exam Strategy & Shortcut Count the number of years backwards and subtract 1 day for every ordinary year. Only subtract 2 if a leap day is crossed while moving backwards. ### Common Pitfall Overcomplicating the backward calculation or accidentally shifting the day forward instead of backwards. ### Final Answer Therefore, the correct answer is **Friday**.