Jharkhand PSC Prelim Exam 2010 Solved Paper

The year 1964 was a leap year while the leap year ended on 29 February 1964 , so 1965 would not be a leap year. That is why it would be Thursday on 15 July, 1965 .
∘ 15 July $1964\to 15$ July 1965 $=365$ days
$\therefore \frac{365}{7}=52$ (week) $+1(1$ day) $=$ Thursday