On 7th May 2009, it was Wednesday. What was the day of the week on 7th May 2008?
Tuesday
The year 2008 is a leap year. So, it has 2 odd days.
But the date is 7th May which is after 29th Feb. So, only 1 odd day will be counted.
∴The day on 7th May, 2009 will be 1 days beyond the day on 7th May, 2008.
7th May, 2009 is Wednesday. So, 7th May, 2008 is Tuesday.