An experiment requires to make an experimental record every 5 hours. When the 5th record is made, the hour hand of the clock just points to "8", so when the first record is made, what is the hour hand pointing to.
一项实验要求每隔5小时做一次实验记录，做第5次记录时，时钟的时针恰好指向"8"，那么第一次记录时，时针指向多少．
<result>12</result>