Ty Kora Tek is propitiated each Wildday by Earth cults. Wildday of Death Week is her seasonal holy day. The entire Death Week of Darkness Season is dedicated to her; her High Holy Day is Wildday of that week. On that day, the dead visit the living and must be fed and offered gifts.
Now that last sentence is pretty darned filled with possibilities. Obvious that means a festival analogous to the Día de los Muertos is going to be found in many Theyalan lands – particularly in the Holy Country, Sartar, and Maniria. But it also means that each year, the dead leave The Necropolis and travel to Nochet along the Sacred Road. And the living costume themselves up as the Dead, offer them food, songs, and gift, and celebrate their ancestors.
And so not only in Nochet and Esrolia, but no doubt in Boldhome and other Sartarite communities, we get Ty Kora Tek’s Day of the Dead celebrations!