nemayan.

Headword: 
nemayan.
Principal English Translation: 

in the middle of the year or the week (see Molina)

Alonso de Molina: 

nemayan. entre año, o entre semana.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 67r. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

nemayan (adverb) = in the course of the year
Daniel Garrison Brinton, Ancient Nahuatl Poetry: Containing the Nahuatl Text of XXVII Ancient Mexican Poems (1877), 159.

themes: 
Time, Calendar, Frequency