Wrong airing date

it is either a typo or because air Dates change a lot.... I know Chinese movies have a 3 year ban for shows with Korean actors in them so Japanese may be  delayed..... I know I  have to wait almost 1 year after a Japanese  movie premieres to watch it in my country 

*bump*  Just checked the link and it's still showing 2018.  Has anyone tried submitting an  edit to change the date again? I wonder if approving a new edit would maybe fix it?

 Somach:

I submitted new date and it changed. I guess this solves the problem.

That is because you added a month and day. That doesn't solve the problem. The original problem is that when only the year is available it shows up as airing next year.