it is already going, or the sun is high up (see Molina)
yeuecaca yntonatiuh. ya va, o esta alto el sol. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 36r. col. 2. Thanks to Joe Campbell for providing the transcription.