So, I borrowed my friends DS so I could use it for something, and her time is about about half a month more days further then mine. I didn't realize it (my villagers are safe u.u) but now I'm worried to go back on my own. If I sync the time on my ds to hers, will it say I time traveled? Or will it just think it's the same day as on her ds? Help would be much appriciated!
Any time you time travel backwards, it only counts as one day, so as long as no one has pinged you, TTing back by putting your cartridge back in your other DS shouldn't boot anyone or put them in boxes. But, if you want to be super careful, syncing the dates up between systems would make it to where you don't TT at all.