Just over a week ago, it was revealed that the topic of Splatoon 2’s second Splatfest would be between mayonnaise and ketchup in Europe. It has now been confirmed that this topic will be the same in both North America and Japan, as well.
As for when the Splatfest will take place, the time will be different for each region. For North America, the event will begin on Friday, August 4 at 9 PM PT / Saturday, August 5 at 12 AM ET and will end one full day later. Additionally, it seems the results of the Splatfest will be tallied separately, with Nintendo noting that the results will be unique based on their region.
Splatoon 2 is available for the Nintendo Switch.