When does the johto event end

It didn't specify. I'd like to know how long they plan on keeping the boxes in store so I can plan out if I'll earn enough coin for the big box or not.

As Quest 7/8 includes getting the Gold Johto medal and 6/8 requires you to play for 7 straight days, I'm expecting that this event is going to last at least 10 days - possibly longer.

As for the boxes... I hope they last the entire time. I kinda like them.