The xiuhpōhualli (Nahuatl pronunciation: [ʃiʍpoːˈwalːi], from xihuitl (“year”) + pōhualli (“count”)) is a 365-day calendar used by the Aztecs and other pre-Columbian Nahua peoples in central Mexico. It is composed of eighteen 20-day "months," which through Spanish usage came to be known as veintenas (“scores, groups of twenty”), with an inauspicious, separate 5-day period at the end of the year called the nēmontēmi. The name given to the 20-day periods in pre-Columbian times is unknown, and though the Nahuatl word for moon or month, mētztli, is sometimes used today to describe them, the sixteenth-century missionary and ethnographer, Diego Durán explained that:

In ancient times the year was composed of eighteen months, and thus it was observed by these Indian people. Since their months were made of no more than twenty days, these were all the days contained in a month, because they were not guided by the moon but by the days; therefore, the year had eighteen months. The days of the year were counted twenty by twenty.

The xiuhpōhualli calendar (in history known as the "vague year" which means no leap day) had its antecedents in form and function in earlier Mesoamerican calendars, and the 365-day count has a long history of use throughout the region. The Maya civilization version of the xiuhpōhualli is known as the haab', and 20-days period was the uinal. The Maya equivalent of nemontemi is wayeb'. In common with other Mesoamerican cultures the Aztecs also used a separate 260-day calendar (Classical Nahuatl: tonalpōhualli). The Maya equivalent of the tonalpōhualli is the tzolk'in. Together, these calendars would coincide once every 52 years, the so-called "calendar round," which was initiated by a New Fire ceremony.

Aztec years were named for the last day of the 18th month according to the 260-day calendar the tonalpōhualli. The first year of the Aztec calendar round was called 2 Acatl and the last 1 Tochtli. The solar calendar is connected to agricultural practices and holds an important place in Aztec religion, with each month being associated with its own particular religious and agricultural festivals. Each 20-day period starts on a Cipactli (Crocodile) day of the tonalpōhualli for which a festival is held. The eighteen veintena are listed below. The dates in the chart are from the early eyewitnesses, Diego Durán and Bernardino de Sahagún. Each wrote what they learned from Nahua informants. Sahagún's date precedes the Durán's observations by several decades and is believed to be more recent to the Aztec surrender to the Spanish. Both are shown to emphasize the fact that the beginning of the Native new year became non-uniform as a result of an absence of the unifying force of Tenochtitlan after the Mexica defeat.

Veintenas of the xiuhpōhualli

# Glyph Name Gregorian range Presiding deities
DuránSahagún
1 ātl cāhualo (“the water ceases”)
cuahuitl ēhua (“the trees rise”)		 Mar 01–Mar 20 Feb 02–Feb 21 Water gods
2 tlācaxīpēhualiztli (“flaying of men”) Mar 21–Apr 09 Feb 22–Mar 13 Xipe Totec
3 tōzōztōntli (“lesser vigil”) Apr 10–Apr 29 Mar 14–Apr 02 Tlaloc
4 huēyi tōzōztli (“greater vigil”) Apr 30–May 19 Apr 03–Apr 22 Cinteotl
5 toxcatl (“dryness”) May 20–Jun 08 Apr 23–May 12 Tezcatlipoca
6 etzalcualiztli (“eating of cooked maize and beans”) Jun 09–Jun 28 May 13–Jun 01 Tlaloque
7 tēcuilhuitōntli (“lesser feast day”) Jun 29–Jul 18 Jun 02–Jun 21 Huixtocihuatl
8 huēyi tēcuilhuitōntli (“greater feast day”) Jul 19–Aug 07 Jun 22–Jul 11 Xilonen
9 tlaxōchimaco (“giving of flowers”)
miccāilhuitōntli (“lesser feast day of the dead”)		 Aug 08–Aug 27 Jul 12–Jul 31 Huitzilopochtli
10 xocotl huetzi (“the xocotl falls”)
huēyi miccāilhuitl (“greater feast day of the dead”)		 Aug 28–Sep 16 Aug 01–Aug 20 Xiuhtecuhtli
11 ochpaniztli (“sweeping”) Sep 17–Oct 06 Aug 21–Sep 09 Teteo Innan
12 teōtlehco (“the gods arrive”) Oct 07–Oct 26 Sep 10–Sep 29 All the gods
13 tepēilhuitl (“feast day of mountains”) Oct 27–Nov 15 Sep 30–Oct 19 Mountains
14 quechōlli (“roseate spoonbill”) Nov 16–Dec 05 Oct 20–Nov 8 Mixcoatl
15 panquetzaliztli (“raising of banners”) Dec 06–Dec 25 Nov 09–Nov 28 Huitzilopochtli
16 ātemoztli (“descent of water”) Dec 26–Jan 14 Nov 29–Dec 18 Rain gods
17 tititl (“tightening,” “contraction”) Jan 15–Feb 03 Dec 19–Jan 07 Tonan
18 izcalli (“offshoot,” “bud”) Feb 04–Feb 23 Jan 08–Jan 27 Xiuhtecuhtli
– nēmontēmi (“they fill up in vain”)[1][2] Feb 24–Feb 28 Jan 28–Feb 01 None

Aztec years were named for the last day of their fourth month[3] according to the 260-day calendar, the tonalpohualli.

Reconstruction of the calendar

For many centuries, scholars have tried to reconstruct the Aztec calendar. A correlation that is accepted in some circles was proposed by professor Rafael Tena (INAH),[4] based on the studies of Sahagún, Durán and Alfonso Caso (UNAM). His correlation argues that the mexica year started on February 13th using the old Julian calendar or February 23rd of the current Gregorian calendar.

See also

Notes

  1. ↑ The nēmontēmi (“they fill up in vain”) constituted a 5-day intercalary period rather than a conventional veintena. According to Spanish sources, they were regarded as inauspicious and left for contemplation.
  2. ↑ "The Nemontemi and the Month Quahuitlehua in the Aztec Solar Calendar". World Digital Library.
  3. ↑ The Mexica Calendar and the Cronography. Rafael Tena. INAH-CONACULTA. 2008 p 82-83
  4. ↑ The Mexica Calendar and the Cronography. Rafael Tena. INAH-CONACULTA. 2008

References

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