Ever thought it'd be cool to have your art, writing, or challenge runs featured on PokéCommunity? Click here for info - we'd love to spotlight your work!
Welcome to PokéCommunity! Register now and join one of the best fan communities on the 'net to talk Pokémon and more! We are not affiliated with The Pokémon Company or Nintendo.
I tried it too when I imported... I figured it didn't work so I quit. I just waited it out! I don't know how the game knows! It has A SUPER human computer inside it or something!
I'd venture to guess the DS keeps track of a "number of days passed" value which is independent of the clock. This is just speculation, however, but it would explain the behaviour of honey trees and Drifloon.
I believe there is some sort of "clock" or battery in the DS cart itself. Otherwise, it's in the programming. I too have tried to "change the time" to make the day a different time, but that doesnt seem to affect day events ingame.