class TimeToTime:
    def __init__(self,start, end):
        self.start = start;
        self.end = end;

    def get_end(self):
        return self.end

    def get_start(self):
        return self.start

    def set_start(self, start):
        self.start = start

    def set_end(self, end):
        self.end = end