Zagmuk, which literally means "beginning of the year", is a Mesopotamian festival celebrating the New Year.
 The feast fell in March or April and lasted about 12 days.
 It celebrates the triumph of Marduk, the patron deity of Babylon, over the forces of Chaos, symbolized in later times by Tiamat.
 The battle between Marduk and Chaos lasts 12 days, as does the festival of Zagmuk.
 In Uruk the festival was associated with the god An, the Sumerian god of the night sky.
 Both are essentially equivalent in all respects to the Akkadian "Akitu" festival.
 In some variations, Marduk is slain by Tiamat and resurrected on the vernal equinox.
A night deity is a goddess or god in mythology associated with night, the night sky, or darkness.
 They commonly feature in polytheistic religions.
 The following is a list of night deities in various mythologies.
National Dark-Sky Week (NDSW), held during the week of the new moon in April, is a week during which people worldwide turn out their lights in order to observe the beauty of the night sky without light pollution.
 This event was founded in 2003 by high school student Jennifer Barlow of Midlothian, Virginia and its popularity and participation increases every year.
 It has been endorsed by the International Dark-Sky Association (IDA), the American Astronomical Society (AAS), the Astronomical League, and "Sky & Telescope" ("S&T").
Toxcatl (] ) was the name of the fifth twenty-day month or "veintena" of the Aztec calendar which lasted from approximately the 5th to 22 May and of the festival which was held every year in this month.
 The Festival of Toxcatl was dedicated to the god Tezcatlipoca and featured the sacrifice of a young man who had been impersonating the deity for a full year.
Nemmara  and vallanghy are two neighbouring towns in the south part of Palakkad district, which is in the valley of Nelliyampathi hills.
 The green carpet of paddy field will turn to the festival ground in the first week of April.
 The festival falls on 20th of 'Meenam' according to the Malayalam Calendar (2nd or 3rd of every April).
 The 'Kodiyettam' (starting) will be celebrated on 'meenam 1st' every year.
 The celebration continues for the first 20 days of 'meenam', and on 20th day the Vela festival will be celebrated.
 The annual Vela festival, celebrated by Nemmara and Vallangi villages after the paddy harvest, is famous for its display of fireworks and caparisoned elephants.
Tlalchitonatiuh (] ; "sun of the red earth" or "red sun of the earth", from "tlālli", earth, soil; "chīltic", red; "tōnatiuh" or "tōnatih", sun) was a Mesoamerican deity associated with the setting sun, when the stars start to appear in the night sky.
 Tlalchitonatiuh was worshipped among many Mesoamerican cultures including Mayans, but originated from the Toltec civilization.
Tezcatlipoca ( ; Classical Nahuatl: "Tezcatlipōca" ] ) was a central deity in Aztec religion, and his main festival was the Toxcatl ceremony celebrated in the month of May.
 One of the four sons of Ometeotl, he is associated with a wide range of concepts, including the night sky, the night winds, hurricanes, the north, the earth, obsidian, enmity, discord, rulership, divination, temptation, jaguars, sorcery, beauty, war and strife.
 His name in the Nahuatl language is often translated as "Smoking Mirror" and alludes to his connection to obsidian, the material from which mirrors were made in Mesoamerica which were used for shamanic rituals and prophecy.
 Another talisman related to Tezcatlipoca was a disc worn as a chest pectoral.
 This talisman was carved out of abalone shell and depicted on the chest of both Huitzilopochtli and Tezcatlipoca in codex illustrations.
Plynteria (Gr.
 πλυντήρια ) was a festival of ancient Greece celebrated at Athens every year, on the 22nd of Thargelion, in honor of Athena Polias, with the heroine Aglauros (or with the two combined as Athena Aglauros), whose temple stood on the Acropolis.
 The festival's name came from "plynein" (πλύνειν ), a Greek verb meaning "to wash".
Tango no Sekku (端午の節句 ) also known as "Ayame no hi" (Iris festival) is one the five annual ceremonies that were traditionally held at the Japanese imperial court called Gosekku .
 It is the Japanese version of Double Fifth and was celebrated on the 5th day of the 5th moon in the lunar calendar or Chinese calendar.
 After Japan switched to the Gregorian calendar, the date was moved to May 5.
 The festival is still celebrated in China, Taiwan, Hong Kong and Macau as the Duanwu Festival or Tuen Ng Festival (Cantonese), in Korea as the Dano Festival, and Vietnam as the Tết Đoan Ngọ on the traditional lunar calendar date.
Shemini Atzeret ( – "Eighth [day of] Assembly"; Sefardic/Israeli pron.
 "shemini atzèret"; Ashkenazic pron.
 "shmini-atsères") is a Jewish holiday.
 It is celebrated on the 22nd day of the Hebrew month of Tishrei in the Land of Israel, and on the 22nd and 23rd outside the Land, usually coinciding with late September or early October.
 It directly follows the Jewish festival of Sukkot which is celebrated for "seven" days, and thus Shemini Atzeret is literally the "eighth" day.
 It is a separate—yet connected—holy day devoted to the spiritual aspects of the festival of Sukkot.
 Part of its "duality" as a holy day is that it is simultaneously considered to be both connected to Sukkot and also a separate festival in its own right.

Question: Which Aztex deity is associated with the night sky and is celebrated from May 5th to May 22nd every year during the festival of Toxcatl?
Answer: Tezcatlipoca