summer (see Molina) or the green time of year (see Karttunen); in spring, in the rainy season
See an image that represents xopan in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).
The glyph for Xopanteotl (M771r) from the Matrícula de Huexotzinco, can be found here:
https://aztecglyphs.wired-humanities.org/content/xopanteotl-mh771r
xopan (noun) = the springtime
y yevatini ya quinovallaque xopa = They just came in the spring. (Cuernavaca region, ca. 1540s)