The contest is global, everyone is in 1 bucket.

There will be 2 main winners, 1 including maint time, 1 not including maint time.

Then 20 runners (i guess 10 higher/lower)

Everyone is in the same boat and shares the same times, JP/EN/FR/GR/any-other is 1 big contest.

Yoshi is making a post, that will get translated and release, hence no time, but its clearly BG as he said its their world and Yoshi posted in their thread, thus BG know the time, told us, and now we know the win time. The time it took total will be around 7hrs 40mins for non maintenance and about 9hrs 58mins with maintenance, with flexibility as no knows the exact minute the servers went back up after maintenance.