Ome Acatl.

Headword: 
Ome Acatl.
Principal English Translation: 

Two Reed (see attestations); one of the years known as Two Reed was 1559 in the Christian calendar
Víctor M. Castillo F., "Relación Tepepulca de los señores de México Tenochtitlan y de Acolhuacan," Estudios de Cultura Náhuatl 11 (1974), 183–225, and see pp. 204–205.

also, the name of a deity, "Ome Acatl" or "Omacatl," worshipped at the temple of Huitznahuac (or Uitznahuac); he was associated with banquets and feasting; those who did not properly worship him were haunted by him in their dreams, or they choked on their food, or they stumbled when walking
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 1 -- The Gods; No. 14, Part 2, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1950), 13.

Orthographic Variants: 
Ume Acatl, Umacatl, Omacatl
Attestations from sources in English: 

Omacatl's feast involved the making of a large round bone out of maize dough. It was a priest, an elder of the city, who made the "bone," which would be broken and shared among many people, who would also be drinking an alcoholic beverage. His likeness would be stabbed in the stomach. His likeness wore a crown of feathers, the "eagle-warrior's crown, the eagle-warrior's dress bordered in red eyes, and a cape of netting with snail-shells. His breast ornament had snail-shells. A mirror-stone in two parts [was painted] upon his face. He was [also] arrayed with a chalky ear-plug; his shield was chalk-covered and had paper streamers. The device for seeing was in his hand. [He sat upon] his stool of reeds and rushes." central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 1 -- The Gods; No. 14, Part 2, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1950), 15.

Two Reed appears on the bottom of a stone carving of Xiuhcoatl (held at Dumbarton Oaks). This year marker referred to the New Fire Ceremony of 1507.
Patrick Thomas Hajovsky, On the Lips of Others: Moteuczoma's Fame in Aztec Monuments and Rituals (Austin: University of Texas Press, 2015), 88, 91, fig. 5.5.

Attestations from sources in Spanish: 

axcan in ipan i xihuitl ticate in motenehuaya ome acatl = ahora en el año en que estamos, al que se daba por nombre Dos Caña (Equivalente a 1559) (centro de México, s. XVI)
Víctor M. Castillo F., "Relación Tepepulca de los señores de México Tenochtitlan y de Acolhuacan," Estudios de Cultura Náhuatl 11 (1974), 183–225, y ver la pág. 204—205.

ixquichica axcan ipan ticate xiuhtonalli umacatl = hasta ahora en el año en que estamos de signo Dos Caña (centro de México, s. XVI)
Víctor M. Castillo F., "Relación Tepepulca de los señores de México Tenochtitlan y de Acolhuacan," Estudios de Cultura Náhuatl 11 (1974), 183–225, y ver la pág. 216—217.

axcan ipan xiuhtonalli umacatl = en el signo anual Dos Caña (centro de México, s. XVI)
Víctor M. Castillo F., "Relación Tepepulca de los señores de México Tenochtitlan y de Acolhuacan," Estudios de Cultura Náhuatl 11 (1974), 183–225, y ver la pág. 224—225.