This one took me aback, until I noticed the slight-of-hand in the wording (I’ll underline it).
Denver has 300 days of annual sunshine.
Located east of a major mountain range, Denver has a mild, dry and sunny climate with more annual hours of sun than San Diego or Miami Beach. In winter, Denver is dryer than Phoenix with an average daily high of 45 degrees in February.
So I assume the days are longer in Denver? Why more annual “hours”?