class Timer:
    def __init__(self, interval_s):
        self._interval_s = interval_s
        self._last_time = 0
        self._last_utc = (0,0,0)
    
    def set_interval(self, new_interval_s):
        self._interval_s = new_interval_s
    
    def check_timer(self, utc):
        ns = utc[3] * 0.000000001
        timestamp = utc[0] * 3600 + utc[1] * 60 + utc[2] + ns
        shifted_timestamp = timestamp
        if self._last_utc[0] == 23 and utc[0] == 0:
            shifted_timestamp += 24*3600
        if (shifted_timestamp - self._last_time) >= self._interval_s:
            self._last_time = timestamp
            self._last_utc = (utc[0], utc[1], utc[2])
            return True
        return False
    
    def reset(self, utc):
        ns = utc[3] * 0.000000001
        self._last_time = utc[0] * 3600 + utc[1] * 60 + utc[2] + ns
        self._last_utc = (utc[0], utc[1], utc[2])