Santa Elena Poco Uinic
  Location within Mesoamerica | |
| Alternative name | Poco Uinic |
|---|---|
| Location | Chiapas, Mexico |
| Region | Chiapas |
| Coordinates | 16°35′14.9172″N 91°44′20.4756″W / 16.587477000°N 91.739021000°W |
| History | |
| Periods | Late Classic |
| Cultures | Maya civilization |
Santa Elena Poco Uinic (also known as just Poco Uinic) is a Classic Maya site in Chiapas, Mexico. It contains Stela 3, that has the date 9.17.19.13.16 5 K'ib' 14 Ch'en and a glyph that indicates an eclipse. An eclipse was recorded as occurring on July 16, 790 CE O.S., so this find has frequently been proposed as a way to establish a correlation between the Maya Calendar and the Julian Calendar.