Forgot to change the time on my camera after DST passed and took a thousand of pictures. I needed to find a quick way to change the time in the EXIF tag of all those photos. Turns out the free version of EXIF DATE CHANGER works perfectly for this. This will also work if you forgot to change the time when travelling in Europe / US for example.
Download from here : http://www.relliksoftware.com/exifdatechanger/