During the last two minutes of the second half, the clock will stop for player's time-outs, official's time-outs, penalties, after a first down, after an incomplete pass, after a play ends out of bounds or a score. In the case of a time-out, an incomplete pass, or after a play ends out of bounds, the clock will start on the next legal snap. In the case of a penalty or first down, the game clock will start again once the ball is spotted and the ready for play signal is given by the referee.