Determine how long until the next scheduled time for a Task.
        Returns the number of seconds until the next scheduled time or zero
        if the task needs to be run immediately.
        If it's an hourly task and it's never been run, run it now.
        If it's a daily task and it's never been run and the hour is right, run it now.

def check(self):
        """
        Determine how long until the next scheduled time for a Task.
        Returns the number of seconds until the next scheduled time or zero
        if the task needs to be run immediately.
        If it's an hourly task and it's never been run, run it now.
        If it's a daily task and it's never been run and the hour is right, run it now.
        """
        boto.log.info('checking Task[%s]-now=%s, last=%s' % (self.name, self.now, self.last_executed))

        if self.hourly and not self.last_executed:
            return 0
            
        if self.daily and not self.last_executed:
            if int(self.hour) == self.now.hour:
                return 0
            else:
                return max( (int(self.hour)-self.now.hour), (self.now.hour-int(self.hour)) )*60*60

        delta = self.now - self.last_executed
        if self.hourly:
            if delta.seconds >= 60*60:
                return 0
            else:
                return 60*60 - delta.seconds
        else:
            if int(self.hour) == self.now.hour:
                if delta.days >= 1:
                    return 0
                else:
                    return 82800 # 23 hours, just to be safe
            else:
                return max( (int(self.hour)-self.now.hour), (self.now.hour-int(self.hour)) )*60*60