That was on Aug 8th 1945. Notice the sailor in the picture was wearing long sleeves. I remember when I was in from 1969-71, the military was completely strict on the halves of the year that we were to wear short sleeves or long sleeves. If that was August, he would be in short sleeves.
http://en.wikipedia.org/wiki/V-J_Day_in_Times_Square
http://en.wikipedia.org/wiki/V-J_Day_in_Times_Square