Eliud Kipchoge, a Kenyan runner, became the first person to run a marathon in under two hours, clocking a finishing time of one hour 59 minutes and 40 seconds.
Within any given five minutes of clock time, for example, you may find an hour of resting which is independent of clock time.I wanted to make this point earlier.
By using heart rate monitors, he was able to tell that students who clocked 10 minute mile times were still working just as hard as those who could finish in 8.
Globes even used to have the analemma printed on them to allow people to determine the difference between clock time and solar time based on the day of the year.