A reasonable solution I saw is to give everyone "DMT potions", handed out over a period of weeks (e.g. divide the playerbase into 3 1-week blocks).
But I am not exaggerating when I say that I severely doubt that the korean devs are able to implement this properly and in a timely fashion. Their reluctance to change DMT from three 1-hour blocks to 24 hours says a thousand words about how doing something like that is probably unreasonably difficult for them. The DMT event itself is probably some hardcoded garbage considering they've kept the same time blocks for years and years.