Mesoamerican ballgame many Caribbean islands including Cuba, Puerto Rico, and the West Indies, has been proposed as a descendent of the Mesoamerican ballgame, perhaps through the Maya. Mesoamerican ballgame The Mesoamerican ballgame was a sport with ritual associations played since 1400 BC by the pre-Columbian people of Ancient Mesoamerica. The sport had different versions in different places during the millennia, and a newer more modern version of the game, "ulama", is still played in a few places by the indigenous population. The rules of the game are not known, but judging from its descendant, ulama, they were probably similar to racquetball, where
Adoption of the Gregorian calendar government in 1912 as the start rather than the regnal year of an emperor. The adopted calendar in both mainland China and Taiwan are called the "Public Calendar" (), or "New Calendar" (). Months in Gregorian calendar in Chinese are rarely named, instead they are usually numbered. For instance, Gregorian calendar December in China are usually written as month 12. On the other hand, in Chinese calendar, the 11th month and 12th month are usually nicknamed. Orally, people are accustomed to call the date in the month as "No. "dd"", for example, the Spring Festival of this year (2017) is