Party 1963

Some attendees of a party or social gathering in 1963. In the last picture I posted I set the date as Christmas because the series seemed to follow on from a Christmas picture, but there don't seem to be decorations in this picture so it's difficult to say exactly what the occasion is. It is becoming dark outside, which could suggest early evening on a date later in the year? Looks like a reflection of the flash bulb has been caught in the window.