0 o'clock of midnight is assumed to be changeable the date in present Japan at the date. It might indicate after it literally becomes "(night) day when it dawned", and the sun rises at the time zone (To going out the sunset later) at night. It is necessary to note it because point into which the date changes might not be indicated. The expression might double because the date by time has come out after recent years come and confusion be caused though there was no gap of time because the start during a day becomes a sunrise in classics.