time

class Time:
    max_hours = 23
    max_minutes = 59
    max_seconds = 59

    def __init__(self, hours, minutes, seconds):
        self.hours = hours
        self.minutes = minutes
        self.seconds = seconds

    def set_time(self, hours, minutes, seconds):
        self.hours = hours
        self.minutes = minutes
        self.seconds = seconds

    def get_time(self):
        self.hours = (self.hours + (self.minutes + self.seconds // 60) // 60) % 24
        self.minutes = (self.minutes + self.seconds // 60) % 60
        self.seconds = self.seconds % 60
        return f"{self.hours:02d}:{self.minutes:02d}:{self.seconds:02d}"

    def next_second(self):
        self.seconds += 1
        return self.get_time()


time = Time(9, 30, 59)
print(time.next_second())
time = Time(10, 59, 59)
print(time.next_second())
time = Time(23, 59, 59)
print(time.next_second())