I blew it!
I misunderstood that the time to end the auction is Pacific Standard Time(UTC-8),
and I could not bid by 1 hour gap.
Actually the time when the auction ended was Pacific Daylight Time(UTC-7).
Because Japan has no custom of daylight saving time, I have failed because I am unfamiliar.
I look forward to the next forum auction.
Congratulations Oldroof!