Mesoamerican Long Count calendar 18. Thus 0.0.1.0.0 does not represent 400 days, but rather only 360 days and 0.0.0.17.19 represents 359 days. The name "b'ak'tun" was invented by modern scholars. The numbered Long Count was no longer in use by the time the Spanish arrived in the Yucatán Peninsula, although unnumbered k'atuns and tuns were still in use. Instead the Maya were using an abbreviated Short Count. Long Count dates are written with Mesoamerican numerals, as shown on this table. A dot represents "1" while a bar equals "5". The shell glyph was used to represent the zero concept. The Long Count calendar required
Lords of the Night the evidence suggests that the lord of a given night ruled over that entire night. Zelia Nuttall argued that the Nine Lords of the Night represented the nine moons of the Lunar year. The cycle of the Nine Lords of the Night held special relation to the Mesoamerican ritual calendar of 260-days and nights or -night which includes exactly 29 groups of 9 nights each, and also, approximately, 9 vague lunations of 29 days each. The Nine Lords of the Night in Aztec mythology are: Lords of the Night In Mesoamerican mythology the Lords of the Night () are a