When is metagross comm day for the asian-pacfic region

Nobody but Niantic knows. They may not have even have decided yet.

Who knows but when they received recompense for articuno it had Hurricane before it was available elsewhere so it is likely they will make it up.

Let's hope that Niantic gives us something exclusive to the Asia C-Day for making up, like they did on Articuno Day.
By the way, aren't they worried about Western players going into Asia for the make-up C-Day and exploiting it to get more MM Metagross and Beldum Candies?! I hope no Western player is sick enough to do this.

i only hope for niantic to wait after halloween event ends, because if they dont do, it will be unfair to legal non-asian-pacific players