-ilhuiyoc.

Headword: 
-ilhuiyoc.
Principal English Translation: 

preceded by possessive prefix and quantifier (a certain number of) days after (see Karttunen)

Orthographic Variants: 
-ilhuiyōc
IPAspelling: 
-ilwiyoːk
Frances Karttunen: 

-ILHUIYŌC preceded by possessive prefix and quantifier (a certain number of) days after / días después (C) An example with a number is ĪCHICŌMILHUIYŌC ‘seven days after that’; one with a non-numeral quantifier is ĪQUĒZQUILHUIYŌC ‘several days after that.’ With a month or year, the expression means on the designated day of that unit time. See ILHUI-TL, -YŌ, -C(O).
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 104.