No one is going to change the time just in the summer. That doesn’t make sense. It generates a additional time zone border between countries just in the summer.

No one is going to change the time just in the summer. That doesn’t make sense. It generates a additional time zone border between countries just in the summer. Just imagine the chaos this is causing with train schedules. Just imagine the problems this is causing for programming libraries handling time. And yet many countries do this every year.