This could very well have been called “Falsehoods programmers believe about date and time calculations”. It fits very well into the pattern of other similarly titled lists which have been published in recent years.
edit: which cites https://infiniteundo.com/post/25326999628/falsehoods-program... (from HN's own patio11) as inspiration, as the original "Falsehoods programmers believe about X".
I much prefer this format.