The distinction between empirical facts and conceptual facts

Think for a moment about the fact that a day is 24 hours long. Earlier you learned the distinction between empirical facts and conceptual facts. Does this fact seem to clearly belong to one or the other of these categories? Explain in a way that shows you have a clear grasp of these terms. (Note: If you happen to be familiar with the distinction between a sidereal day and a solar day, this question refers to a solar day.)
Answer to this question.
Then: Read this short article and explain whether it tends to support or contradict your answer above.