Principal English Translation:
book of days
Eloise Quiñones Keber, "An Introduction to the Images, Artists, and Physical Features of the Primeros Memoriales," in Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 19.
Attestations from sources in English:
tonalamatl = the 260–day calendar
David Tavárez, The Invisible War: Indigenous Devotions, Discipline, and Dissent in Colonial Mexico (Stanford: Stanford University Press, 2011), 45.