Question:medium

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

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Non-leap year: same date advances by \(+1\) weekday; leap year: \(+2\). When going backward, subtract accordingly.
Updated On: Aug 18, 2026

  • Sunday

  • Thursday

  • Tuesday

  • Friday
Show Solution

The Correct Option is D

Solution and Explanation

Step 1: Count the days from \(8\) Dec \(2006\) to \(8\) Dec \(2007\): exactly \(365\) days, since \(2007\) is not a leap year.

Step 2: Reduce mod \(7\): \(365=7\times52+1\), so the weekday shifts forward by \(1\) day over the year.

Step 3: Since \(8\) Dec \(2007\) is Saturday, going back \(1\) day gives the weekday for \(8\) Dec \(2006\).
\[ \boxed{\text{Friday}} \]
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