Venus was known to Mesoamerican civilizations as the bringer of war. Venus also appears to go through four phases. For 250 days the planet is known in Western cultures as the “Evening Star” as it follows the setting sun. After the Evening Star phase, Venus disappears for eight days before returning as the “Morning Star”—the 236-day-long phase when it rises just before dawn. After the Morning Star phase, Venus disappears for 90 days before returning again as the Evening Star. A document from Central Mexico written in the late 1500s called the Annals of Cuauhtitlan associates the eight-day period between the Evening and Morning Star phases with the death and resurrection of Quetzalcoatl, a deity known as Kukulcan to the ancient Maya. Kukulcan was the sky god and the most powerful of the ancient Maya deities.
It is possible that events such as eclipses may have stimulated star wars, prompting the Maya to launch star wars in the belief that they had received a favorable omen for military endeavors. They may also have had astronomical connections with planets other than Venus; many star wars appear to be correlated with the retrograde periods of Mars, Jupiter and Saturn.https://en.wikipedia.org/wiki/Star_war
The Mayas predicted about Dec 21 2012. This is the year 2012.
I found this website that list the movement of Venus. The Mayas tracked Venus precisely.The movements of the planet Venus also held special meaning for them. Tables that mark Venus’ position throughout the year are recorded in ancient Maya books called codices and on monuments throughout the Maya kingdoms. https://www.archaeology.org/issues/44-1211/features/304-uxmal-venus
*****On December 21st Venus passes 5º.2 North of the variable star named Alniyat ( Sco or Sigma Scorpii, mag. +2.9v). Later that same day the planet enters the non-zodiacal constellation of Ophiuchus, the Serpent-Bearer. On December 22nd, at about 1945 UT, the planet passes 7º.3 South of a magnitude +6.9 star in South-eastern Ophiuchus which received a new name in late 2019. The star, which is easily seen in binoculars, is named Timir (it is also known under lengthy catalogue designations such as HD 148427, HIP 80687 or BD-13 4437). For the curious, its astronomical coordinates are: RA = 16h 28m 28s, = -13º.39.
Like the star Formosa in Leo (see above), the name was selected as a result of the IAU's NameExoWorlds campaign. Timir means 'darkness' in the Bengali language, alluding to the star being far away in the darkness of space. Timir's exoplanet (HD 148427 b) is named Tondra, which means 'nap' in Bengali, alluding to the symbolic notion that the planet was 'asleep' until it was discovered (in 2009).
Also on December 21st, on the opposite side of the Sun some 53º to the ESE of Venus, the giant planets Jupiter and Saturn pass each other in the night sky for the first time since May 2000. Visible in the dusk sky in the constellation of Capricornus, the Sea Goat, they are separated by just 0º.1, which is their closest passage in almost four centuries; such an event is called a planetary conjunction. For details on the observability of this 'Great Conjunction', see the Jupiter or Saturn pages. Venus is regularly involved in planetary conjunctions, although only one of them takes place during the 2020-21 morning apparition: at the very end of the period, in February 2021.