Nonna knew the Australia (ie, Josie's real grandfather) in 1945 - the photograph is dated. Josie's mother was born from this union, and had Josie when she was 17. During the film, Josie herself is seventeen. About thirty-five years would have passed, then, making the present about 1980 or so. But it's quite clear (from the fashions, technology, streetscapes, dialogue, references, music, cars, etc, etc) that it's around 2000 or so, twenty years too late.