a bad day sign (see Sahagún)
Amo qualcan in omecavi piltzintli, tequantonalpan; iece qualtzin in vncan tlatoa, in jtlatqujcaio, ca qujnanamjquj, ca qujtlaqualtililia, qujcecevia in tequantonalli (Or: Amo qualcan in omecahui piltzintli, tecuantonalpan; yece qualtzin in oncan tlatoa, in itlatquicayo, ca quinanamiqui, ca quitlaqualtililia, quicecehuia in tecuantonalli) = [He said,] "The baby has arrived at a bad time, in the time of an evil day sign. However, god are its companions, which govern there, for they help, improve, moderate the evil day sign." (central Mexico, sixteenth century)