my transit time is more than 24hours. can I get transit visa on airport?

Prakash, the VOA is seldom available. You are suggested to get a transit permit from the embassy or consulate in Japan. In addition, I need to tell you the "24-hour period" in may cities starts fom the midnight following passenger's arrival, so you can see whether you still eligible for the 24-hour free transit policy. If not, you have to get the transit permit.