----- Using real times -----
The time one unit ago was        :                    0
The time one unit ago was        :                    0
The time now is                  :                    1
One time unit from now it will be:                    2
The time at 20 will be           :                   20
The time at 40 will be           :                   40

----- Using integer times -----
The time one unit ago was        :                  100
The time one unit ago was        :                  100
The time now is                  :                  101
One time unit from now it will be:                  102
The time at 120 will be          :                  120
The time at 140 will be          :                  140