There is an electronic clock that lights up every 9 minutes and rings every hour. At 12:00 noon, the electronic clock rings and lights up. What time is the next time both the bell and the light are on?
有一个电子钟，每走9分钟亮一次灯，每到整点响一次铃．中午12点整，电子钟响铃又亮灯．则下一次既响铃又亮灯是多少点钟．
<result>3</result>