Zero Pop actually fell on the same day as the solstice on 12/27/−575, 12/27/−574, 12/27/−573, and 12/26/−572 (astronomical year numbering, Universal Time), if you don't account for the fact that the Maya region is in roughly time zone UT−6. See IMCCE seasons互联网档案馆的存檔，存档日期2012-08-23..
Zero Pop actually fell on the same day as the solstice on 12/27/−575, 12/27/−574, 12/27/−573, and 12/26/−572 (astronomical year numbering, Universal Time), if you don't account for the fact that the Maya region is in roughly time zone UT−6. See IMCCE seasons互联网档案馆的存檔，存档日期2012-08-23..
Academia de las Lenguas Mayas de Guatemala. Lenguas Mayas de Guatemala: Documento de referencia para la pronunciación de los nuevos alfabetos oficiales. Guatemala City: Instituto Indigenista Nacional. 1988. 而在Kettunen and Hemke (2005)的著作中有詳盡的細節與注釋，提到該正寫法在馬雅學家（英语：Mayanist）社群中的採用狀況，頁5。
