According to one reference work, “the Mayan calendar, although highly complex, was the most accurate known to man until the introduction of the Gregorian calendar. ” — Funk & Wagnalls New Encyclopedia.
Menurut salah satu karya referensi, ” kalender Maya, meskipun sangat rumit, adalah yang paling akurat yang diketahui manusia sebelum kalender Gregorian diperkenalkan ”. — Funk & Wagnalls New Encyclopedia.