What is a commuter pass with a fractional day of a municipal bus?

As a consideration for the school's closing days, etc., the use period of municipal bus commuter passes will be extended to a maximum of 29 days at the time of purchase. Only commuter passes are available.
It is useful before long holidays.
Example) I want to ride from June 10 to July 20.
→1 month and 11 days extension

Commuter pass for municipal bus