That's pretty awesome. I hear often how perfectly on time the trains are there, which is usually true. However, I've experienced some train delays in Japan, mostly in Tokyo. One was so bad I ended up doing something else for a couple hours to wait until it got resolved.

Here's an article that reviews info from a report on rush hour delays in Tokyo for those interested.

https://www.japantimes.co.jp/news/2018/01/16/national/japans...