# In a certain year, January had exactly $4$ Mondays and $4$ Fridays. What was the day on $2^{\text{nd}}$ October the previous year?

In a certain year, the month of January had exactly $4$ Mondays and $4$ Fridays. What was the day on Gandhi Jayanti $(2^{\text{nd}}$ October $)$ the previous year?

I am not sure how to approach this one, any ideas?

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I didn't know that there is tag called calendar-computations. Thanks @J.M. :) –  Quixotic Jul 21 '12 at 4:05