Clock circuit is divided into 12 parts, from 0 to 12 PM. A circle is 12 hours. From early morning to zero 12 noon is a circle, between this from zero to 12 o 'clock. After 12 noon, 1 PM, etc., at two o 'clock in the afternoon or 13 points of 14 points.

 

　　Watching time look at the clock, what time is it now to determine.

 

　　And then see the minute hand, a circle is 60 minutes, 12 points, each point is the interval between 5 minutes. 60 small points, each point is one minute. Sure is now a few minutes.

 

　　To see a stopwatch, a circle is 60 seconds, 12 points, each major point is the interval between 5 seconds. 60 small points, each point is a second. Sure now is a few seconds.