In the manga Vampire Knight we are in what year? So ... When Yuki 15 years, we are in what year?

The big tanong among many others!
In the manga Vampire Knight we are in what year?

So ... When Yuki 15 years, we are in what year?

All indications are that this is around 1965 because of old cars and carriages in 2015 but also because of the jeans and glasses.
Help me! please
Matsuri Hino madami does not indicate or so I Ratte information.