Koliada, in Slavic mythology, the name of a goddess of the sky. She brings up a new sun every day; for that reason, she is hunted by Mara to stop her and cause total darkness. The pagan feast of Koliada took place between the January 6 and January 19, but has since been merged into the celebration of Christmas.
The name is thought to derive from Greek Kalanda, romanized as Calandae.
References
Koliada (goddess) Wikipedia(Text) CC BY-SA