What is the meaning of the story title, "A Day's Wait"?

This wonderful short story by Ernest Hemingway details the
illness suffered by young Schatz and his misunderstood seriousness of the diagnosis.
Schatz overhears his doctor tell his father that his temperature is "102 degrees."
Having attended school in Europe, he is not used to the Fahrenheit scale: Instead, he
thinks the temperature is being calculated on the Celsius scale. Schatz realizes that no
one could live long with a temperature of 102 degrees Celsius (beyond the boiling
point), so he silently and patiently awaits his death during the day's long
wait.