function tick() internal returns(bool) {
        if (_now != now) {
            _now = now;
            uint256 _today; 

            
            (,,end, ended,,,,,,,,) = FoMoLong.round_(thisRoundIndex);
            if (!ended) {
                _today = _now / 1 days;
            }
            else {
                _today = end / 1 days;
            }

            
            while (today < _today) {
                issuedInsurance = issuedInsurance.sub(unitToExpire[today]);
                today += 1;
            }
        }
        return ended;
    }