Originally Posted by
armagebedar
At HND, ANA's check-in counters are open all day, so you can indeed check in as early as you would like that day regardless of what flight you are on.
This information is totally wrong.
ANA counter at international terminal is not open until 6:25. While there is kiosk to check in, there is no baggage drop. Hence you still have to wait until counter open to get in.