class Solution(object):
    def findMinDifference(self, timePoints):
        """
        :type timePoints: List[str]
        :rtype: int
        """
        DAYINMINUTES = 24 * 60

        minutes = []
        for t in timePoints:
            hour, minute = t.split(":")
            minutes.append(int(hour) * 60 + int(minute))
        minutes.sort()

        minDiff = DAYINMINUTES
        for i in range(0, len(minutes) - 1):
            minDiff = min(minDiff, minutes[i+1] - minutes[i])

        overDayMinDiff = minutes[0] + (DAYINMINUTES - minutes[-1])
        return min(minDiff, overDayMinDiff)