LESSON 1: 12- and 24-hour Clocks OPTIMIZE For this lesson, you will need to recall some time units and the conversion of one unit to another. So, let us review the conversion of time units by copying and completing the details in the table below in your notebook. Conversions for Various Time Units Name of Unit Symbol Value second S Base unit minute min 1 min = S hour h 1 h = min day d 1 d = 24 h If you spent 120 minutes studying your module in Math, then how many hours did you study?​